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Unconventional superconductivity in chiral molecule-TaS2 hybrid superlattices.
Wan, Zhong; Qiu, Gang; Ren, Huaying; Qian, Qi; Li, Yaochen; Xu, Dong; Zhou, Jingyuan; Zhou, Jingxuan; Zhou, Boxuan; Wang, Laiyuan; Yang, Ting-Hsun; Sofer, Zdenek; Huang, Yu; Wang, Kang L; Duan, Xiangfeng.
Afiliação
  • Wan Z; Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.
  • Qiu G; Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA.
  • Ren H; Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.
  • Qian Q; Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.
  • Li Y; Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA.
  • Xu D; Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA.
  • Zhou J; Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.
  • Zhou J; Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA.
  • Zhou B; Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA.
  • Wang L; Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.
  • Yang TH; Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA.
  • Sofer Z; Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Prague, Czech Republic.
  • Huang Y; Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA. yhuang@seas.ucla.edu.
  • Wang KL; California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, USA. yhuang@seas.ucla.edu.
  • Duan X; Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA. klwang@ucla.edu.
Nature ; 632(8023): 69-74, 2024 Aug.
Article em En | MEDLINE | ID: mdl-38926586
ABSTRACT
Chiral superconductors, a unique class of unconventional superconductors in which the complex superconducting order parameter winds clockwise or anticlockwise in the momentum space1, represent a topologically non-trivial system with intrinsic time-reversal symmetry breaking (TRSB) and direct implications for topological quantum computing2,3. Intrinsic chiral superconductors are extremely rare, with only a few arguable examples, including UTe2, UPt3 and Sr2RuO4 (refs. 4-7). It has been suggested that chiral superconductivity may exist in non-centrosymmetric superconductors8,9, although such non-centrosymmetry is uncommon in typical solid-state superconductors. Alternatively, chiral molecules with neither mirror nor inversion symmetry have been widely investigated. We suggest that an incorporation of chiral molecules into conventional superconductor lattices could introduce non-centrosymmetry and help realize chiral superconductivity10. Here we explore unconventional superconductivity in chiral molecule intercalated TaS2 hybrid superlattices. Our studies reveal an exceptionally large in-plane upper critical field Bc2,|| well beyond the Pauli paramagnetic limit, a robust π-phase shift in Little-Parks measurements and a field-free superconducting diode effect (SDE). These experimental signatures of unconventional superconductivity suggest that the intriguing interplay between crystalline atomic layers and the self-assembled chiral molecular layers may lead to exotic topological materials. Our study highlights that the hybrid superlattices could lay a versatile path to artificial quantum materials by combining a vast library of layered crystals of rich physical properties with the nearly infinite variations of molecules of designable structural motifs and functional groups11.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article