Author
Listed:
- Zhong Wan
(University of California, Los Angeles)
- Gang Qiu
(University of California, Los Angeles)
- Huaying Ren
(University of California, Los Angeles)
- Qi Qian
(University of California, Los Angeles)
- Yaochen Li
(University of California, Los Angeles)
- Dong Xu
(University of California, Los Angeles)
- Jingyuan Zhou
(University of California, Los Angeles)
- Jingxuan Zhou
(University of California, Los Angeles)
- Boxuan Zhou
(University of California, Los Angeles)
- Laiyuan Wang
(University of California, Los Angeles)
- Ting-Hsun Yang
(University of California, Los Angeles)
- Zdeněk Sofer
(University of Chemistry and Technology Prague)
- Yu Huang
(University of California, Los Angeles
University of California, Los Angeles)
- Kang L. Wang
(University of California, Los Angeles
University of California, Los Angeles
University of California, Los Angeles)
- Xiangfeng Duan
(University of California, Los Angeles
University of California, Los Angeles)
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.
Suggested Citation
Zhong Wan & Gang Qiu & Huaying Ren & Qi Qian & Yaochen Li & Dong Xu & Jingyuan Zhou & Jingxuan Zhou & Boxuan Zhou & Laiyuan Wang & Ting-Hsun Yang & Zdeněk Sofer & Yu Huang & Kang L. Wang & Xiangfeng D, 2024.
"Unconventional superconductivity in chiral molecule–TaS2 hybrid superlattices,"
Nature, Nature, vol. 632(8023), pages 69-74, August.
Handle:
RePEc:nat:nature:v:632:y:2024:i:8023:d:10.1038_s41586-024-07625-4
DOI: 10.1038/s41586-024-07625-4
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