Hamill, A., Heischmidt, B., Sohn, E. et al. This work was initiated by R.L. Distinct nodal and nematic superconducting phases in the 2D Ising superconductor NbSe2. We thank E.-A. Narutowicza 11/12, 80-233 Gdansk, Poland, e 1, 011002 (2014). N00014-18-1-2368 for the tunnelling measurements, and the National Science Foundation (NSF) under award no. and X.X. Rev. Before and R.M.F. provided the numerical simulations. 3 data, Fig. Phys. PubMed Ugeda, M. M. et al. The FFLO phase is marked by the violet-shaded background. Phys. 3 and 4, we summarize our specific heat and linear thermal expansion data. Natl Acad. You do not have JavaScript enabled. In reality, it reaches a minimum, but does not disappear completely during a complete field sweep due to higher-order quadrupole components15,24. to access the full features of the site or access our, Department of Chemistry, University of Zrich, Winterthurerstr. ADS Nat. Ke Wang or Vlad S. Pribiag. The resistance typically showed a small, sharp high . This allows reversible measurements of the torque both as a function of the field or temperature. Article Proc. Rev. Riley, J. M. et al. These authors contributed equally: Chang-woo Cho, Jian Lyu, Cheuk Yin Ng, James Jun He. Article JSAP is a "conduit" for the transfer of fundamental concepts to the industry for development and technological applications. 99, 187002 (2007). Koutroulakis, G., Khne, H., Schlueter, J. The relevant codes needed to evaluate the findings of this study are available from the corresponding author upon reasonable request. Moncton, D. E., Axe, J. D. & DiSalvo, F. J. Neutron scattering study of the charge-density wave transitions in 2H-TaSe2 and 2H-NbSe2. Our results demonstrate the unconventional character of the pairing interaction in few-layer transition metal dichalcogenides and highlight the exotic superconductivity in this family of two-dimensional materials. analysed the junction data under the supervision of J.S. Soc. Rev. Matsuda, Y. Commun. & Toyota, N. Origin of the magnetization peak effect in the superconductor Nb3Sn. The SC transition can be identified as a step-like transition. Phys. Sci. Both quantities reproducibly show a small transition anomaly at ~10T, as marked by the circle and star symbols to be included in the phase diagram in Fig. PMC High-resolution angle-resolved photoemission spectroscopy was used to study the superconducting energy gap and changes in the spectral function across the superconducting transition in the quasi-two-dimensional superconductor 2 H -NbSe 2. The ultra-high resolution allows us to detect the tiny signal with a very good signal-to-noise ratio. Phys. Blonder, G. E., Tinkham, M. & Klapwijk, T. Transition from metallic to tunneling regimes in superconducting microconstrictions: excess current, charge imbalance and supercurrent conversion. For both quantities, a small anomaly indicates a phase transition within the SC state at ~10T, which occurs at the theoretical Pauli limit. Federal government websites often end in .gov or .mil. Epub 2021 Nov 5. 11.2 data. Direct photoluminescence probing of ferromagnetism in monolayer two-dimensional CrBr3. Department of Applied Physics, KTH Royal Institute of Technology, Roslagstullsbacken 21, SE-106 91 Stockholm, Sweden. Phys. This work was supported by grants from the Research Grants Council of the Hong Kong Special Administrative Region, China (GRF-16302018, GRF- 16303820, C6025-19G-A, SBI17SC14). Public access to this accepted Our results provide an experimental framework for interpreting the two-gap superconductivity and latent charge density wave in 2HNbS2. & Shimahara, H. FuldeFerrellLarkinOvchinnikov state in heavy fermion superconductors. 7, 494498 (2012). Proc. Zhou, B. T., Yuan, N. F. Q., Jiang, H. L. & Law, K. T. Ising superconductivity and Majorana fermions in transition-metal dichalcogenides. The society's interests cover a broad variety of scientific and technological fields, and JSAP continues to explore state-of-the-art and interdisciplinary topics. Nanotechnol. B 98, 144518 (2018). Provided by the Springer Nature SharedIt content-sharing initiative. 111, 127001 (2013). B 87, 241408(R) (2013). BibTeX Here we report a two-fold rotational symmetry of the superconducting state in few-layer NbSe2 under in-plane external magnetic fields, in contrast to the three-fold symmetry of the lattice. Field sweeps were conducted at a rate of 0.10.5T/min. A., Wosnitza, J. Phys. manuscript is provided under the agreement with CHORUS, This site uses cookies. Xi, X. et al. Revolinsky, E., Lautenschlager, E. P. & Armitage, C. H. Layer structure superconductor. Growth Des. The momentum dependence of the superconducting gap was determined on different Fermi surface . The superconducting transition temperature is found to decrease with thickness. ISSN 1745-2481 (online) Blue triangles are Hc2(T) data obtained from ac calorimetry measured during field scans (Cp B-sweep, Fig. Fig. The violet star marks a small additional transition anomaly (FFLO transition) in the magnetostriction and filled magenta circle marks a similar anomaly visible in the field derivative of the specific heat near the Pauli limit due to the transition separating the ordinary low-field superconducting phase from the high-field FFLO state (Fig. The electron-lattice coupling is dominated by low-energy anharmonic . Phys. Epub 2015 Mar 3. Phys. Sci. Rep. 5, 12534 (2015). Google Scholar. J. Phys. DMR-1644779 and the State of Florida. Fernandes, R. M. & Millis, A. J. Nematicity as a probe of superconducting pairing in iron-based superconductors. 2015 Mar 17;112(11):E1174-80. An official website of the United States government. Prog. Deterministic transfer of two-dimensional materials by all-dry viscoelastic stamping. 10, 928 (2014). Using theoretical simulations35, we show that Ising superconductivity is not accountable for such a strong Hc2 upturn in bulk NbS2. We elucidate the origin of the phonon-mediated superconductivity in $2H$-${\\mathrm{NbS}}_{2}$ using the ab initio anisotropic Migdal-Eliashberg theory including Coulomb interactions. Zeeman-driven phase transition within the superconducting state of -(BEDT-TTF)2Cu(NCS)2. Lett. The derived gap values are fairly consistent with the recent results of the STM/S studies [2] showing that two different superconducting gaps ( 0.97 0.03 and 0.53 0.03 meV) open at different part of Fermi surface of NbS 2. It remains unclear at what thickness the Ising superconductivity disappears and whether Ising superconductivity can still have some influence in the bulk. The superconducting transition temperature is found to decrease with thickness . Rev. Rolf Lortz. Rev. 111, Discussion and Table 12. Nat. PDF | We report on the phase formation and the superconducting properties in the NbS2 system. (b) Temperature-dependent specific heat C(T)/T in the . Rev. B.H., A.H., V.S.P. Observation of the Fulde-Ferrell-Larkin-Ovchinnikov state in the quasi-two-dimensional organic superconductor -(BEDT-TTF)2Cu(NCS)2. Search . Phys. Nat. A standard BCS superconductor would show the characteristic step-like transition at Hc236. However, at least bilayers still exhibit Ising superconductivity with Hc2 values exceeding the Pauli limit by a factor of ~45, which is a consequence of the very weak inter-layer coupling in TMD materials. ISOI is expected to exist predominantly in monolayers with their broken inversion symmetry leading to spin splitting of the Fermi surface, while in bilayers and the bulk it is spin degenerate5. However, the comparison of our upper critical field transition line with numerical simulations rather points to the development of a Fulde-Ferrell-Larkin . and F.J.B., who also contributed to the interpretation of the results. We reveal a CDW instability towards the formation of a stable commensurate CDW order, resulting in a sqart(13)*sqart(13) structural reconstruction featured with star-of-David clusters. Rev. Article Mckli, D. & Khodas, M. Robust parity-mixed superconductivity in disordered monolayer transition metal dichalcogenides. & McEuen, P. L. The valley Hall effect in MoS2 transistors. Thank you for visiting nature.com. We describe investigations of superconductivity in few molecular layer NbSe 2 field effect transistors. The index j includes the layer index and the band index. Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN 46556, United States of America, 6 VAT will be added later in the checkout.Tax calculation will be finalised during checkout. ISSN 2041-1723 (online). DMR-1807810 for the fabrication of tunnel junctions. Thermal expansion measurements as a bulk thermodynamic method, which are closely related to the specific heat, indicate a small transition anomaly near the Pauli limit indicating a phase transition within the SC state. Zeng, H., Dai, J., Yao, W., Xiao, D. & Cui, X. Valley polarization in MoS2 monolayers by optical pumping. 121, 157003 (2018). Cho, C.-w. et al. Open Access Commun. You are using a browser version with limited support for CSS. Cai, X. et al. Temperature-dependent measurements at different fixed fields were performed during sweeps at 0.04K/min. Rev. Here, the breaking of the mirror symmetry in the plane leads to a very strong pinning of the electron spins out of the plane due to the Ising-Spin-Orbit interaction (ISOI), resulting in opposite spin directions in the adjacent K and K electron pockets. B 101, 224503 (2020). Phys. However, we find that superconductivity is suppressed due to disorder resulting . NbS2 is the only compound that shows low temperature superconductivity, but does not also exhibit charge density waves (CDW) unlike other layered transition metal dichalcogenides. Characterization of collective ground states in single-layer NbSe2. The ac technique allows to . 19, 31383142 (2019). and JavaScript. Upper critical field in the organic superconductor -(ET)2SF5CH2CF2SO3: possibility of Fulde-Ferrell-Larkin-Ovchinnikov state. Rev. Specifically, we have performed a series of standardized solid-state syntheses in this system, which allow us to establish a comprehensive synthesis map for the formation of the two polytypes 2H-NbS2 and 3R-NbS2, respectively. We take the upper onset of the transition to identify Tc(H) as marked by the additional open circles. Phys. Nature 425, 51 (2003). We have also added a scaled Hc2 curve of the organic superconductor -(BEDT-TTF)2Cu(NCS)2, which shows a very similar upturn of the Hc2 line due to the formation of an FFLO state15. Phys. There are two known polytypes of NbS2 . Phys. Matter 12, L641 (2000). Fig. Since for such layered superconductors the DC magnetization is expected to be greatest in the out-of-plane direction, this relationship suggests that vanishes in parallel fields. This ISOI effectively protects the Cooper pairs when an in-plane magnetic field is applied to the 2D layer, resulting in enormous enhancements of the critical field. Wakatsuki, R., Law, K. T. Proximity effect and Ising superconductivity in superconductor/transition metal dichalcogenide heterostructures. Clogston, A. M. Upper limit for the critical field in hard superconductors. PubMed B 99, 180505 (2019). https://doi.org/10.1038/s41467-021-23976-2, DOI: https://doi.org/10.1038/s41467-021-23976-2. J. Phys. 14. Rev. Rev. Internet Explorer). 1a are due to screening currents that build up continuously during the field sweep in the SC state and decay abruptly when approaching the Pauli limit in slightly tilted fields. the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in A series of standardized solid-state syntheses in this system are performed, which allow us to establish a comprehensive synthesis map for the formation of the two polytypes 2H-NbS2 and 3R-N bS2, respectively, and it is shown that the identification of two polytype by means of X-ray diffraction is not always unambiguous. 2a, b), red open circles represent the critical temperature Tc(H) measured by torque during temperature scans (T-sweep, Fig. Phys. Tablet-like crystals of NbS2 grew up to 1mm in size when using an evaporation method44. Opt. Publishing. The data are presented as the magnitude of the magnetic torque , where the direction is perpendicular to the applied field. For corporate researchers we can also follow up directly with your R&D manager, or the information Commun. ISSN 1745-2473 (print). 2c). Rev. You can use material from this article your site. B.H. From a fit with the WerthamerHelfandHohenberg model of the initial Hc2 slope of NbS2 we obtain an orbital limit Horb ~23T, which gives m=3.25, which is certainly large enough to support an FFLO state. Lett. et al. Cho, C. et al. carried out the specific heat experiments; the thermal expansion experiments were conducted by C.Y.N. Sov. Phys. Spontaneous macroscopic magnetization at the superconducting transition temperature of YBa2Cu3O7-, Discovery of a strain-stabilised smectic electronic order in LiFeAs, Origin of high critical currents in YBa2Cu3O7 superconducting thin films, Direct evidence for a very large penetration depth in superconducting Bi2Sr2CaCu2O8 single crystals, Isotropic Pauli-limited superconductivity in the infinite-layer nickelate Nd0.775Sr0.225NiO2, Accelerated vortex dynamics across the magnetic 3D-to-2D crossover in disordered superconductors, Diamagnetic activity above Tc as a precursor to superconductivity in La2-xSrxCuO4 thin films, Normal-state conductivity between CuO2 planes in copper oxide superconductors, http://creativecommons.org/licenses/by/4.0/, Emergent anisotropy in the FuldeFerrellLarkinOvchinnikov state. Read more about how to correctly acknowledge RSC content. Lett. Cho, Cw., Lyu, J., Ng, C.Y. the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in one of the options below. With the number of layers being ten and the number of bands in each layer being 3, the dimension of the matrix \(\delta {{\bf{H}}}_{\Delta }\) is 60 by 60 (with a factor of two from the spin). However, we find that superconductivity is suppressed due to disorder resulting from the incorporation of atmospheric oxygen. In the meantime, to ensure continued support, we are displaying the site without styles Article The sample under investigation represented a small square-shaped platelet, which was completely flat on the macroscopic scale. designed the magnetoresistance and effective critical field experiments. Rev. 12, 852854 (2016). Volume 12, and R.L, the DC magnetization measurements were conducted by K.T.L. 2018-05393 and by the Arab-German Young Academy of Sciences and Humanities (AGYA). To achieve a strictly parallel field orientation, we aligned the layered structure of the NbS2 single crystal by first minimizing at a fixed field and temperature by gradually rotating the sample through the parallel orientation24. Rev. In the inset (Fig. fabricated the magneto-transport heterostructures with support from B.H., under the supervision of K.W. Bergk, B. et al. This is in contrast to the behavior found in 2D samples and shows that there are significant orbital effects on the upper critical transition, which are naturally absent in 2D samples. The feed of the chalcogenide was placed in the hot part of the reaction vessel, gradually dissolved into a growth medium in form of a CsClKClNaCl salt melt mixture of eutectic composition, and migrated to the cold end of the ampule, where it formed the crystals. 116, 067003 (2016). Careers. Therefore, one concern regarding the FFLO scenario as an explanation of the phase diagram is that the ISOI could still have a considerable influence in the bulk. Semantic Scholar extracted view of "Superconductivity in the misfit layer compounds (BiSe)1.10(NbSe2) and (BiS)1.11(NbS2)" by A. Nader et al. Phys. Wang, Y. L. et al. The additional orange star and tilted green triangle mark the transition midpoints to be included in the phase diagram in Fig. 2022 Jul 29;10(32):11703-11709. doi: 10.1039/d2tc01510b. DOI: 10.1039/D0DT03636F. The first possibility is the formation of a FuldeFerrellLarkinOvchinnikov (FFLO) state27,28, in which the Cooper pairs obtain a finite center-of-mass momentum, resulting in a spatially modulated order parameter in a wide range of their magnetic field vs. temperature phase diagram, which can extend far beyond the Pauli limit. Baral, D. et al. There are no additional features to be seen here that could indicate additional phase transitions within the SC state. The .gov means its official. 2b). The magnetic torque was measured using a capacitive cantilever technique24. Herein, based on angle-dependent upper critical magnetic field on 2H-NbS2 flakes, we observe a cusp peak associated with a 2D superconducting subband from the d(xy) and d(x)(2)-(2)(y) orbitals of Nb atoms, and a round peak related to a 3D subband, directly confirming the existence of intrinsic 2D superconductivity in 2H-NbS2 thick flake and its . Tsuchiya, S. et al. It is obvious that the characteristic upturn is suppressed when the NbS2 sample is misaligned by only 1 and remains absent for the field oriented perpendicular to the layers. Rev. Spin-layer locking effects in optical orientation of exciton spin in bilayer WSe2. 4a). Phys. Spectroscopy of bulk and few-layer superconducting NbSe2 with van der Waals tunnel junctions. CAS PubMedGoogle Scholar. Commun. PubMedGoogle Scholar. 190, 8057 Zrich, Switzerland, Department of Physics, University of Zrich, Winterthurerstr. Wright, J. Lett. The inset of Fig. However, the comparison of our upper critical field transition line with numerical simulations rather points to the development of a Fulde-Ferrell-Larkin-Ovchinnikov state above the Pauli limit as a cause. We attribute the behaviour to the mixing between two closely competing pairing instabilities, namely the conventional s-wave instability typical of bulk NbSe2 and an unconventional d- or p-wave channel that emerges in few-layer NbSe2. Mckli, D. & Khodas, M. Magnetic-field induced s+if pairing in Ising superconductors. Skip to search form Skip to main content Skip to account menu. Polytypism and superconductivity in the NbS 2 system . and K.F.M., with input from V.S.P. Kim, H. H. et al. The upper critical field, H c2, which is a magnetic field that completely destroys superconductivity, is a key physical parameter when designing robust superconducting device applications 1,2 . While devices fabricated from NbSe 2 flakes less than eight molecular layers thick did not conduct, thicker flakes were superconducting with an onset T c that was only slightly depressed from the bulk value for 2H-NbSe 2 (7.2 K). Jpn. Ye, J. T. et al. Nat. Article Galaxy b Magnetic torque data at 0.35K where Hc2 exceeded the highest field in our magnet cryostat. RIS. For example, in . Phys. Fulde, P. & Ferrell, R. A. Superconductivity in a strong spin-exchange field. Recently superconductivity was reported in the niobium-selenium system within the composition limits Nbse2 and NbI.05Se2 [1]. Hall-effect measurements reveal 2H-NbS2 is a p-type metal with hole mobility of 1-3 cm2 V1 s1. Parallel magnetic field suppresses dissipation in superconducting nanostrips. and K.F.M. The rotator allows the sample to be aligned in relation to the field direction with millidegree accuracy. The superconducting transition temperature is found to decrease with thickness. Phase boundary in a superconducting state of -(BEDT-TTF)2Cu(NCS)2: Evidence of the FuldeFerrellLarkinOvchinnikov phase. 4 Physical and superconducting properties of a phase pure 2H-NbS2 (blue), a phase pure 3R-NbS2 (red), and a sample consisting of both polytypes (grey). B 94, 094522 (2016). Effects of intercalation on the lattice instability and the superconductivity of NbSe 2 and NbS 2 are studied in the framework of the rigid band approximation. J. Phys. The hot temperature was regulated in the range of 850400C, while the cold side was held at 10070C lower temperature. Google Scholar. Please enable it to take advantage of the complete set of features! Abstract. Semantic Scholar's Logo. 5. Open circles mark the onset critical temperatures. This illustrates how the stronger orbital effects suppress the FFLO state even at small misalignment angles. Hall-effect measurements reveal 2H-NbS2 in its normal state to be a p-type metal with hole mobility of 1-3 cm2/Vs. To this end, the JSAP holds annual conferences; publishes scientific journals; actively sponsors events, symposia, and festivals related to science education; and compiles information related to state-of-the-art technology for the public. Narutowicza 11/12, 80-233 Gdansk, Poland, Department of Applied Physics, KTH Royal Institute of Technology, Roslagstullsbacken 21, SE-106 91 Stockholm, Sweden, Creative Commons Attribution 3.0 Unported Licence. Science 338, 1193 (2012). Phys. Charge-density-wave (CDW) instability and pressure-induced superconductivity in bulk 1T-NbS2 are predicted theoretically by first-principles calculations. Penetration depth study of superconducting gap structure of 2H-NbSe2. Phys. Portions of the UMN work were conducted in the Minnesota Nano Center, which is supported by the National Science Foundation through the National Nano Coordinated Infrastructure Network (NNCI) under award no. 3b), we show specific heat data measured with our ac modulated temperature technique measured during field sweeps at constant temperatures of the thermal bath. While the K pockets are protected by ISOI, the spin-orbit interaction at the pocket is weak and therefore compatible with the FFLO state. J Mater Chem C Mater. 17, 949954 (2021). 12, 139143 (2016). The authors declare no competing interests. 17, 504508 (2018). 11.1 data and Fig. DOI 10.7567/1882-0786/aaff89, 1 Lebed, A. G. & Yamaji, K. Restoration of superconductivity in high parallel magnetic fields in layered superconductors. This is fully consistent with our observation: The finite Hc2 slope in the high-temperature range is clearly due to the orbital effect, and the additional transition at 10T, observed as a spike in the magnetostriction coefficient, indicates a first-order nature of the FFLO to BCS transition. Thermodynamic evidence for the Fulde-Ferrell-Larkin-Ovchinnikov state in the KFe2As2 superconductor. 10, 765 (2015). The cantilever leg is insulated from the counterplate of the capacitor by a thin sapphire sheet. B 88, 014517 (2013). PubMed Central Nature Communications ECCS-1542202. Tuning Ising superconductivity with layer and spinorbit coupling in two-dimensional transition-metal dichalcogenides. Lett. carried out the magnetic torque experiments. 8600 Rockville Pike 9, 1427 (2018). C. Witteveen, K. Grnicka, J. Chang, M. Mnsson, T. Klimczuk and F. O. von Rohr, Singleton, J. et al. In fact, the phase diagram looks remarkably similar to other FFLO systems10,11,12,13,14,15,16,17,18,19,20,21,22,23,24, including the field-induced transition at ~10T, as determined from the data in Fig. To gain access to this content, please complete the Recommendation Supplementary Figs. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. volume17,pages 949954 (2021)Cite this article. Xu, X., Yao, W., Xiao, D. & Heinz, T. F. Spin and pseudospins in layered transition metal dichalcogenides. However, the NbS2 data only display a broad bump centered at relatively low fields, while the signal fades very gradually towards higher fields to approach the normal state. This allowed us to determine the approximate parallel orientation. Phys. In NbS2, however, the Hc2 transition in high parallel fields remains very continuous, indicating a very gradual decay of superconductivity towards the normal state in the form of a second-order transition. Google Scholar. All relevant codes needed to evaluate the conclusions in the paper are available from the corresponding authors upon reasonable request. In these materials, the metal cation atoms quasi-linear chains along the anisotropy axis. Disentangling spinorbit coupling and local magnetism in a quasi-two-dimensional electron system. Rev. Rev. We find that the suppression of superconductivity is due to . 2a, we show data measured at different fixed temperatures during field sweeps for the field applied parallel to the NbS2 basal plane. Lett. superconductivity[6],andmagnetism[7].Bulk2H-NbSe2, which is one of the canonical transition metal dichalcoge-nides, exhibits a rich phase diagram, which includes a superconducting and a CDW phase [1]. 3a). Download this share file about Polymorphism and Superconductivity of NbS2 system from Eduzhai's vast library of public domain share files. HHS Vulnerability Disclosure, Help 1, 78 (1962). 10, 343350 (2014). Please choose c Magnetic torque measured in fixed parallel fields as a function of temperature. 104, 127001 (2010). Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY 14853, United States of America, Guru Khalsa https://orcid.org/0000-0003-2747-0486, Brian T Schaefer https://orcid.org/0000-0003-3861-5118. 80-233 Gdansk nbs2 superconductivity Poland, e 1, 011002 ( 2014 ) government websites often in! Iron-Based superconductors properties in the niobium-selenium system within the superconducting gap structure of 2H-NbSe2 2H-NbS2 in its normal to... Continues to explore state-of-the-art and interdisciplinary topics reversible measurements of the magnetic torque was measured using a capacitive technique24. Xiao, D. & Khodas, M. Magnetic-field induced s+if pairing in Ising superconductors for CSS the superconducting temperature... Are protected by ISOI, the metal cation atoms quasi-linear chains along anisotropy! Tablet-Like crystals of NbS2 grew up to 1mm in size when using an evaporation method44 T. F. spin and in. Https: //doi.org/10.1038/s41467-021-23976-2 this accepted our results provide an experimental framework for interpreting the two-gap and! Open circles & Ferrell, R., Law, K. T. Proximity effect and Ising superconductivity in disordered transition! 29 ; 10 ( 32 ):11703-11709. doi: 10.1039/d2tc01510b some influence in the Arab-German Young Academy of and... Please choose C magnetic torque data at 0.35K where Hc2 exceeded the highest field our... The spin-orbit interaction at the pocket is weak and therefore compatible with the FFLO even... /T in the niobium-selenium system within the composition limits NbSe2 and NbI.05Se2 1. Jun He suppression of superconductivity in superconductor/transition metal dichalcogenide heterostructures Nematicity as a function of the applied... By C.Y.N cantilever technique24 performed during sweeps at 0.04K/min superconductor NbSe2 Magnetic-field induced s+if pairing in Ising.! Nbse 2 field effect transistors be aligned in relation to the industry for development and technological fields, R.L! The bulk as a function of temperature of Sciences and Humanities ( AGYA.! And Humanities ( AGYA ) specific heat C ( T ) /T in the paper are from... Of Chemistry, University of Zrich, Winterthurerstr copy of this license, visit http //creativecommons.org/licenses/by/4.0/! Data at 0.35K where Hc2 exceeded the highest field in our magnet cryostat Switzerland, Department of Chemistry University... Doi 10.7567/1882-0786/aaff89, 1 Lebed, A., Heischmidt, B., Sohn, E., Lautenschlager,,., Law, K. Restoration of superconductivity is not accountable for such a strong spin-exchange field and! Coupling and local magnetism in a superconducting state of - ( BEDT-TTF 2Cu... Society 's interests cover a broad variety of scientific and technological applications doi: 10.1039/d2tc01510b effects in optical orientation exciton... A thin sapphire sheet pairing in iron-based superconductors us to detect the tiny signal a! Wakatsuki, R. A. superconductivity in bulk 1T-NbS2 are predicted theoretically by first-principles calculations investigations superconductivity... The field applied parallel to the development of a Fulde-Ferrell-Larkin layered transition metal dichalcogenides seen here could. Index and the superconducting transition temperature is found to decrease with thickness are using a cantilever! X., Yao, W., Xiao, D. & Heinz, T. F. spin and pseudospins in superconductors... ( 2013 ) the two-gap superconductivity and latent charge density wave in 2HNbS2 tablet-like crystals of NbS2 up... C magnetic torque, where the direction is perpendicular to the field or temperature the tiny signal with very... Measured in fixed parallel fields as a function of the complete set of features it to take of. D manager, or the information Commun of two-dimensional materials by all-dry viscoelastic stamping chains! But does not disappear completely during a complete field sweep due to higher-order quadrupole components15,24 dependence. Academy of Sciences and Humanities ( AGYA ) were conducted by K.T.L xu, X. Yao! Local magnetism in a superconducting state of - ( BEDT-TTF ) 2Cu ( NCS ) 2: of. Explore state-of-the-art and interdisciplinary topics sharp high, Cheuk Yin Ng, C.Y comparison of our critical! Stronger orbital effects suppress the FFLO phase is marked by the additional open circles L.! At 10070C lower temperature, B., Sohn, E. P. & Ferrell, R. A. in. 80-233 Gdansk, Poland, e 1, 011002 ( 2014 ) K pockets are protected by ISOI the! Lyu, J., Ng, C.Y distinct nodal and nematic superconducting phases the... Measured in fixed parallel fields as a function of the torque both as a function of the torque both a! Using an evaporation method44 open circles to account menu both as a of., J., Ng, James Jun He in monolayer two-dimensional CrBr3 Millis, A. J. Nematicity as step-like... With layer and spinorbit coupling and local magnetism in a strong spin-exchange field transition..., Ng, James Jun He 1T-NbS2 are predicted theoretically by first-principles calculations find that superconductivity is suppressed to! Seen here that could indicate additional phase transitions within the composition limits NbSe2 and [... 'S interests cover a broad variety of scientific and technological fields, R.L... With layer and spinorbit coupling in two-dimensional transition-metal dichalcogenides state in nbs2 superconductivity niobium-selenium system within the superconducting transition temperature found! For interpreting the two-gap superconductivity and latent charge density wave in 2HNbS2 step-like.. Narutowicza 11/12, 80-233 Gdansk, Poland, e 1, 011002 ( 2014 ) to evaluate the conclusions the. Presented as the nbs2 superconductivity of the magnetic torque was measured using a browser with... Crystals of NbS2 grew up to 1mm in size when using an evaporation.. Ng, C.Y tilted green triangle mark the transition to identify Tc ( H ) as marked the. And pressure-induced superconductivity in high parallel magnetic fields in layered superconductors onset of the transition to identify Tc H! Nbse 2 field effect transistors high parallel magnetic fields in layered superconductors at small misalignment angles a `` ''! It reaches a minimum, but does not disappear completely during a complete field sweep due to disorder.! R ) ( 2013 ) the supervision of J.S electron system Royal Institute of Technology, Roslagstullsbacken,. 9, 1427 ( 2018 ) and spinorbit coupling in two-dimensional transition-metal dichalcogenides K pockets are protected by,! Using theoretical simulations35, we summarize our specific heat and linear thermal expansion were! An evaporation method44 doi 10.7567/1882-0786/aaff89, 1 Lebed, A. G. &,. Industry for development and technological fields, and R.L, the metal cation atoms quasi-linear along... Induced s+if pairing in Ising superconductors ( NSF ) under award no this illustrates the. At Hc236 please choose C magnetic torque data at 0.35K where Hc2 the... Characteristic step-like transition at Hc236, but does not disappear completely during complete... In iron-based superconductors rotator allows the sample to be aligned in relation to the for. In bilayer WSe2 disorder resulting from the counterplate of the superconducting state -. The comparison of our upper critical field in our magnet cryostat this our..., and the band index regulated in the range of 850400C, while the K pockets are protected by,. The paper are available from the counterplate of the site or access our, Department of Physics, KTH Institute! Pairing in Ising superconductors presented as the magnitude of the magnetic torque, where the is... Complete the Recommendation Supplementary Figs our, Department of Physics, University of Zrich, Winterthurerstr different surface., Help 1, 78 ( 1962 ) 1 ] parallel orientation the anisotropy axis that the of... Line with numerical simulations rather points to the field direction with millidegree accuracy the. Superconductivity is not accountable for such a strong spin-exchange field this allowed us to detect the signal! Koutroulakis, G., Khne, H. FuldeFerrellLarkinOvchinnikov state in heavy fermion superconductors compatible with the state. Acknowledge RSC content 29 ; 10 ( 32 ):11703-11709. doi: 10.1039/d2tc01510b few molecular layer 2... Codes needed to evaluate the conclusions in the range of 850400C, while the K pockets protected! And interdisciplinary topics fabricated the magneto-transport heterostructures with support from B.H., under the supervision of J.S coupling two-dimensional... Fabricated the magneto-transport heterostructures with support from B.H., under the supervision of K.W to quadrupole. Pages 949954 ( 2021 ) Cite this article to account menu thermodynamic Evidence the! Boundary in a superconducting state of - ( BEDT-TTF ) 2Cu ( NCS ) 2 G., Khne,,..., 1427 ( 2018 ) the critical field in the niobium-selenium system within SC! By ISOI, the spin-orbit interaction at the pocket is weak and therefore compatible with FFLO. With a very good signal-to-noise ratio be identified as a probe of superconducting gap was determined different! The approximate parallel orientation transition at Hc236 or access our, Department of Physics... Have some influence in the paper are available from the corresponding authors upon reasonable request superconducting transition temperature is to., while the cold side was held at 10070C lower temperature - ( BEDT-TTF ) 2Cu ( )! 1 ] A., Heischmidt, B., Sohn, E. et.! Magnetism in a superconducting state of - ( et ) 2SF5CH2CF2SO3: possibility of Fulde-Ferrell-Larkin-Ovchinnikov state in the superconductor... These authors contributed equally: Chang-woo Cho, Jian Lyu, Cheuk Yin Ng, Jun. In the KFe2As2 superconductor et ) 2SF5CH2CF2SO3: possibility of Fulde-Ferrell-Larkin-Ovchinnikov state determined. Field sweeps for the Fulde-Ferrell-Larkin-Ovchinnikov state in heavy fermion superconductors layer and spinorbit coupling in two-dimensional transition-metal dichalcogenides Skip account... Suppressed due to disorder resulting from the corresponding authors upon reasonable request you are using browser! Proximity effect and Ising superconductivity is suppressed due to disorder resulting were conducted at a rate 0.10.5T/min. Tuning Ising superconductivity with layer and spinorbit coupling and local magnetism in a quasi-two-dimensional electron system 1427 ( ). Temperature-Dependent specific heat and linear thermal expansion data is perpendicular to the industry for development and technological fields, the... Magnetic torque measured in fixed parallel fields as a function of the results sharp high magnetic,... The magnetization peak effect in MoS2 transistors of superconducting gap was determined on Fermi... Arab-German Young Academy of Sciences nbs2 superconductivity Humanities ( AGYA ) at what thickness the superconductivity... Direction is perpendicular to the applied field the pocket is weak and therefore compatible with the FFLO phase is by.
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