1. Anderson, P. W. & Blount, E. I. Symmetry considerations on Martensitic transformations: ‘Ferroelectric’ metals? Phys. Rev. Lett. 14, 217–219 (1965).
2. Lines, M. E. & Glass, A. M. Principles and Applications of Ferroelectrics and Related
Materials. (Oxford University Press, 2001).
3. Shi, Y. et al. A ferroelectric-like structural transition in a metal. Nat. Mater. 12,
1024–1027 (2013).
4. Clarke, R., Marseglia, E. & Hughes, H. P. A low-temperature structural phase
transition in β-MoTe2. Philos. Mag. B 38, 121–126 (1978).
5. Sakai, H. et al. Critical enhancement of thermopower in a chemically tuned polar
semimetal MoTe2. Sci. Adv. 2, e1601378 (2016).
6. Matthias, B. T. Superconductivity versus ferroelectricity. Mater. Res. Bull. 5,
665–667 (1970).
7. Krivolapov, Y., Mann, A. & Birman, J. L. Theory of coexistence of superconductivity
and ferroelectricity. Phys. Rev. B 75, 092503 (2007).
8. Collignon, C., Lin, X., Rischau, C. W., Fauqué, B. & Behnia, K. Metallicity and
Superconductivity in Doped Strontium Titanate. Annu. Rev. Condens. Matter Phys.
10, 25–44 (2019).
npj Quantum Materials (2023) 77
9. Tomioka, Y., Shirakawa, N. & Inoue, I. H. Superconductivity enhancement in polar
metal regions of Sr0.95Ba0.05TiO3 and Sr0.985Ca0.015TiO3 revealed by systematic Nb
doping. npj Quant. Mater. 7, 111 (2022).
10. Trimble, C. J. et al. Josephson detection of time-reversal symmetry broken
superconductivity in SnTe nanowires. npj Quant. Mater. 6, 61 (2021).
11. Bauer, E. & Sigrist, M. Non-Centrosymmetric Superconductors: Introduction and
Overview. (Springer Science & Business Media, 2012).
12. Smidman, M., Salamon, M. B., Yuan, H. Q. & Agterberg, D. F. Superconductivity
and spin-orbit coupling in non-centrosymmetric materials: a review. Rep. Prog.
Phys. 80, 036501 (2017).
13. Sato, M. & Ando, Y. Topological superconductors: a review. Rep. Prog. Phys. 80,
076501 (2017).
14. Alidoust, M., Halterman, K. & Zyuzin, A. A. Superconductivity in type-II Weyl
semimetals. Phys. Rev. B 95, 155124 (2017).
15. Bauer, E. et al. Heavy fermion superconductivity and magnetic order in noncentrosymmetric CePt3Si. Phys. Rev. Lett. 92, 027003 (2004).
16. Samokhin, K. V., Zijlstra, E. S. & Bose, S. K. CePt3Si: an unconventional superconductor without inversion center. Phys. Rev. B 69, 094514 (2004).
17. Kimura, N., Ito, K., Aoki, H., Uji, S. & Terashima, T. Extremely high upper critical
magnetic field of the noncentrosymmetric heavy fermion superconductor
CeRhSi3. Phys. Rev. Lett. 98, 197001 (2007).
18. Kimura, N. et al. Pressure-induced superconductivity in noncentrosymmetric
heavy-fermion CeRhSi3. Phys. Rev. Lett. 95, 247004 (2005).
19. Butch, N. P., Syers, P., Kirshenbaum, K., Hope, A. P. & Paglione, J. Superconductivity in the topological semimetal YPtBi. Phys. Rev. B 84, 220504 (2011).
20. Pan, Y. et al. Superconductivity and magnetic order in the noncentrosymmetric
half-Heusler compound ErPdBi. EPL 104, 27001 (2013).
21. Brydon, P. M. R., Wang, L., Weinert, M. & Agterberg, D. F. Pairing of j=3/2 Fermions
in Half-Heusler Superconductors. Phys. Rev. Lett. 116, 177001 (2016).
22. Kim, H. et al. Beyond triplet: unconventional superconductivity in a spin-3/2
topological semimetal. Sci. Adv. 4, eaao4513 (2018).
23. Edelstein, V. M. Magnetoelectric effect in polar superconductors. Phys. Rev. Lett.
75, 2004–2007 (1995).
24. Wakatsuki, R. et al. Nonreciprocal charge transport in noncentrosymmetric
superconductors. Sci. Adv. 3, e1602390 (2017).
25. Ando, F. et al. Observation of superconducting diode effect. Nature 584, 373–376
(2020).
26. He, W.-Y. & Law, K. T. Magnetoelectric effects in gyrotropic superconductors. Phys.
Rev. Res. 2, 012073 (2020).
27. Shen, D. et al. Two-dimensional superconductivity and magnetotransport
from topological surface states in AuSn4 semimetal. Commun. Mater. 1, 1–11
(2020).
28. Shvetsov, O. O. et al. Surface superconductivity in a three-dimensional Cd3As2
semimetal at the interface with a gold contact. Phys. Rev. B 99, 125305 (2019).
29. Zhao, L. et al. Emergent surface superconductivity in the topological insulator
Sb2Te3. Nat. Commun. 6, 8279 (2015).
30. Song, J. et al. Coexistence of surface superconducting and three-dimensional
topological dirac states in semimetal KZnBi. Phys. Rev. X 11, 021065 (2021).
31. Huang, C. et al. Proximity-induced surface superconductivity in Dirac semimetal
Cd3As2. Nat. Commun. 10, 2217 (2019).
32. Liu, Q. et al. Observation of surface superconductivity in a 3D Dirac material. Adv.
Funct. Mater. 32, 2208616 (2022).
33. Cheng, E. et al. Critical topology and pressure-induced superconductivity in the
van der Waals compound AuTe2Br. npj Quantum Mater. 7, 93 (2022).
34. Huang, Z. et al. Dual topological states in the layered titanium-based oxypnictide
superconductor BaTi2Sb2O. npj Quantum Mater. 7, 70 (2022).
35. Nomani, A. & Hosur, P. Intrinsic surface superconducting instability in Type-I Weyl
Semimetals. Phys. Rev. B 108, 165144 (2023).
36. Merlo, F., Pani, M. & Fornasini, M. L. RMX compounds formed by alkaline Earths,
europium and ytterbium—I. Ternary phases with M ≡ Cu, Ag, Au; X ≡ Sb, Bi. J.
Less Common Met. 166, 319–327 (1990).
37. Xie, L. S., Schoop, L. M., Medvedev, S. A., Felser, C. & Cava, R. J. Pressure-induced
structural phase transition in the half-Heusler compound CaAuBi. Solid State Sci.
30, 6–10 (2014).
38. Takahashi, H. et al. Superconductivity in a Magnetic Rashba Semimetal EuAuBi. J.
Phys. Soc. Jpn. 92, 013701 (2023).
39. Bay, T. V. et al. Low field magnetic response of the non-centrosymmetric
superconductor YPtBi. Solid State Commun. 183, 13–17 (2014).
40. Gurevich, A. Limits of the upper critical field in dirty two-gap superconductors.
Phys. C. Supercond. 456, 160–169 (2007).
41. Gurevich, A. Enhancement of the upper critical field by nonmagnetic impurities
in dirty two-gap superconductors. Phys. Rev. B 67, 184515 (2003).
42. Nishikubo, Y., Kudo, K. & Nohara, M. Superconductivity in the Honeycomb-Lattice
Pnictide SrPtAs. J. Phys. Soc. Jpn. 80, 055002 (2011).
Published in partnership with Nanjing University
H. Takahashi et al.
43. Pavlosiuk, O., Kaczorowski, D. & Wiśniewski, P. Shubnikov-de Haas oscillations,
weak antilocalization effect and large linear magnetoresistance in the putative
topological superconductor LuPdBi. Sci. Rep. 5, 9158 (2015).
44. Hunte, F. et al. Two-band superconductivity in LaFeAsO0.89F0.11 at very high
magnetic fields. Nature 453, 903–905 (2008).
45. Ni, N. et al. Effects of Co substitution on thermodynamic and transport properties
and anisotropic Hc2 in Ba(Fe1-xCox)2As2 single crystals. Phys. Rev. B 78, 214515
(2008).
46. Khan, H. R. & Raub, C. J. The superconductivity of gold alloys. Gold. Bull. 8,
114–118 (1975).
47. Wolthuis, A. & Stritzker, B. Amorphous Audi alloys produced by laser quenching
and ion irradiation. J. de. Phys. Colloq. 44, C5–489–C5–493 (1983).
48. Tian, M., Wang, J., Ning, W., Mallouk, T. E. & Chan, M. H. W. Surface superconductivity in thin cylindrical Bi nanowire. Nano Lett. 15, 1487–1492 (2015).
49. Pavlosiuk, O., Kaczorowski, D. & Wiśniewski, P. Superconductivity and Shubnikovde Haas oscillations in the noncentrosymmetric half-Heusler compound YPtBi.
Phys. Rev. B 94, 035130 (2016).
50. Gor’kov, L. P. & Rashba, E. I. Superconducting 2D system with lifted spin
degeneracy: mixed singlet-triplet state. Phys. Rev. Lett. 87, 037004 (2001).
51. Frigeri, P. A., Agterberg, D. F., Koga, A. & Sigrist, M. Superconductivity without
inversion symmetry: MnSi versus CePt3Si. Phys. Rev. Lett. 92, 097001 (2004).
52. Mineev, V. P. Paramagnetic limit of superconductivity in a crystal without an
inversion center. Phys. Rev. B 71, 012509 (2005).
53. Fujimoto, S. Electron correlation and pairing states in superconductors without
inversion symmetry. J. Phys. Soc. Jpn. 76, 051008 (2007).
54. Gao, H. et al. Dirac-Weyl semimetal: coexistence of dirac and Weyl Fermions in
polar hexagonal ABC crystals. Phys. Rev. Lett. 121, 106404 (2018).
55. Zhang, W. & Yi, W. Topological Fulde-Ferrell-Larkin-Ovchinnikov states in spinorbit-coupled Fermi gases. Nat. Commun. 4, 2711 (2013).
56. Qu, C. et al. Topological superfluids with finite-momentum pairing and Majorana
fermions. Nat. Commun. 4, 2710 (2013).
57. Ando, Y. & Fu, L. Topological crystalline insulators and topological superconductors: from concepts to materials. Annu. Rev. Condens. Matter Phys. 6,
361–381 (2015).
58. Cheon, S., Lee, K. H., Chung, S. B. & Yang, B.-J. Emergence of topological superconductivity in doped topological Dirac semimetals under symmetry-lowering
lattice distortions. Sci. Rep. 11, 18539 (2021).
59. Iniotakis, C., Fujimoto, S. & Sigrist, M. Fractional Flux quanta at intrinsic metallic
interfaces of noncentrosymmetric superconductors. J. Phys. Soc. Jpn. 77, 083701
(2008).
60. Takahashi, H. et al. Competing spin modulations in the magnetically frustrated
semimetal EuCuSb. Phys. Rev. B 102, 174425 (2020).
61. Krause, L. et al. Accurate high-resolution single-crystal diffraction data from a
Pilatus3 X CdTe detector. J. Appl. Crystallogr. 53, 635–649 (2020).
62. Blessing, R. H. Data reduction and error analysis for accurate single crystal diffraction intensities. Crystallogr. Rev. 1, 3–58 (1987).
63. Sheldrick, G. M. Crystal structure refinement with SHELXL. Acta Crystallogr. B 71,
3–8 (2015).
64. Giannozzi, P. et al. Quantum espresso: a modular and open-source software
project for quantum simulations of materials. J. Phys. Condens. Matter 21, 395502
(2009).
65. Giannozzi, P. et al. Advanced capabilities for materials modelling with Quantum
ESPRESSO. J. Phys. Condens. Matter 29, 465901 (2017).
66. Quantum Espresso. Quantum Espresso http://www.quantum-espresso.org
(Quantum Espresso, 2019).
67. Dal Corso, A. Pseudopotentials periodic table: From H to Pu. Comput. Mater. Sci.
95, 337–350 (2014).
68. Calderon, C. E. et al. The AFLOW standard for high-throughput materials science
calculations. Comput. Mater. Sci. 108, 233–238 (2015).
Published in partnership with Nanjing University
69. Kawamura, M. FermiSurfer: Fermi-surface viewer providing multiple representation schemes. Comput. Phys. Commun. 239, 197–203 (2019).
ACKNOWLEDGEMENTS
The authors thank I. Terasaki, S. Fujimoto, T. Mizushima, K. Aoyama, and K. Akiba for
fruitful discussions. Single-crystal XRD measurements were conducted with the
approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No.
2021B1198 and 2022A1158). The authors would like to thank M. Arai, Y. Minowa, and
M. Asida for their assistance in the SEM/EDX measurements. This study was
supported in part by JSPS KAKENHI (Grant No. JP20K03802, JP21H01030,
JP22H00343, JP23H04871, and JP23H04868), the Asahi Glass Foundation, Research
Foundation for the Electrotechnology of Chubu, and the Murata Science Foundation.
AUTHOR CONTRIBUTIONS
H.T. conceived and led the project. H.T., T.S., and M.T. synthesized the samples and
performed magnetic and transport measurements. A.N. measured single-crystal XRD
measurements. K.A. and T.C.K measured specific heat capacity and low-temperature
transport properties below 1.8 K. H.T. measured the SEM/EDX. H.T., T.S., A.H.M., and
M.O. conducted the band calculations and structural optimization. S.I. supervised the
work. H.T. and S.I. prepared the manuscript with notable inputs from all authors.
COMPETING INTERESTS
The authors declare no competing interests.
ADDITIONAL INFORMATION
Supplementary information The online version contains supplementary material
available at https://doi.org/10.1038/s41535-023-00612-4.
Correspondence and requests for materials should be addressed to Hidefumi
Takahashi or Shintaro Ishiwata.
Reprints and permission information is available at http://www.nature.com/
reprints
Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims
in published maps and institutional affiliations.
Open Access This article is licensed under a Creative Commons
Attribution 4.0 International License, which permits use, sharing,
adaptation, distribution and reproduction in any medium or format, as long as you give
appropriate credit to the original author(s) and the source, provide a link to the Creative
Commons license, and indicate if changes were made. The images or other third party
material in this article are included in the article’s Creative Commons license, unless
indicated otherwise in a credit line to the material. If material is not included in the
article’s Creative Commons license and your intended use is not permitted by statutory
regulation or exceeds the permitted use, you will need to obtain permission directly
from the copyright holder. To view a copy of this license, visit http://
creativecommons.org/licenses/by/4.0/.
© The Author(s) 2023
npj Quantum Materials (2023) 77
...
論文の公開元へ
