时间反演对称性破缺的笼目超导输运现象

杨硕颖; 殷嘉鑫

doi:10.7498/aps.73.20240917

摘要

近期对钒基笼目超导体(AV₃Sb₅, A = K, Cs, Rb)家族中三种材料的低温量子输运测量均显示出时间反演对称性破缺的超导态. 其中, 在Nb/K_1–xV₃Sb/Nb的约瑟夫森结和RbV₃Sb₅中, 超导转变温度以下的磁阻随磁场扫动方向存在磁滞现象; CsV₃Sb₅中存在零磁场下的超导二极管现象, 即正向和反向的超导临界电流大小不同. 首先, 本文讨论了这些实验现象的区别和联系. 然后, 讨论产生上述非常规超导输运现象的可能机理, 如手性超导序参量(d+id或p+ip), 以及由电荷密度波与常规超导态耦合产生的手性配对密度波.

关键词:

Abstract

Recent studies have found that all three materials within the vanadium-based Kagome superconductors (AV₃Sb₅, A = K, Cs, Rb) exhibit time-reversal symmetry-breaking behaviors in the superconducting states. Among the three, the Josephson junctions structured Nb/K_1–xV₃Sb₅/Nb and RbV₃Sb₅ show magnetic hysteresis below the superconducting transition temperature. In CsV₃Sb₅, there exists a zero-field superconducting diode effect, meaning the magnitude of the positive and negative superconducting critical current are different. We first discuss the similarities and differences among the three above-mentioned experiments. Then, we discuss the possible mechanisms responsible for the unconventional superconducting transport phenomena: such as chiral superconducting order parameter (d+id or p+ip), and chiral pair density waves arising from the coupling of the charge density waves and conventional superconducting states.

Keywords:

作者及机构信息

南方科技大学物理系, 深圳　518055

通信作者: 杨硕颖, yangsy@sustech.edu.cn

Authors and contacts

Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China

Corresponding author: Yang Shuo-Ying, yangsy@sustech.edu.cn

文章全文 : translate this paragraph

参考文献

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施引文献

表 1 不同钒基笼目超导体的超导输运性质比较

Table 1. Comparison of superconducting transport properties of different vanadium-based Kagome superconductors

	Nb/K_1–xV₃Sb₅/Nb^[5]	CsV₃Sb₅^[7]	RbV₃Sb₅^[11]
器件类型	约瑟夫森结	本征超导体	本征超导体
空间局域超电流	$ \surd $ 拓扑边界态	$ \surd $ Little-Parks效应	—
空间反演对称破缺	—	$ \surd $ 超导二极管效应	—
时间反演对称破缺	$ \surd $ 面外磁滞	$ \surd $ 超导二极管效应	$ \surd $ 面内磁滞

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[1]	Landau L D 1965 Collected Papers of LD Landau (Oxford, New York: Pergamon Press
[2]	Du Z, Lu H Z, Xie X 2021 Nat. Rev. Phys. 3 744 Google Scholar
[3]	Jiang K, Wu T, Yin J X, Wang Z, Hasan M Z, Wilson S D, Chen X, Hu J 2023 Nat. Sci. Rev. 10 nwac199 Google Scholar
[4]	Neupert T, Denner M M, Yin J X, Thomale R, Hasan M Z 2022 Nat. Phys. 18 137 Google Scholar
[5]	Wang Y J, Yang S Y, Sivakumar P K, Ortiz B R, Teicher S M, Wu H, Srivastava A K, Garg C, Liu D, Parkin S S, Toberer E S, Mcqueen T, Wilson S D, Ali M N 2023 Sci. Adv. 9 eadg7269 Google Scholar
[6]	Keizer R S, Gönnenwein S T, Klapwijk T M, Miao G, Xiao G, Gupta A 2006 Nature 439 825 Google Scholar
[7]	Le T, Pan Z, Xu Z, Liu J, Wang J, Lou Z, Yang X, Wang Z, Yao Y, Wu C 2024 Nature 630 64 Google Scholar
[8]	Nadeem M, Fuhrer M S, Wang X 2023 Nat. Rev. Phys. 5 558 Google Scholar
[9]	Little W, Parks R 1962 Phys. Rev. Lett. 9 9 Google Scholar
[10]	Wang W, Kim S, Liu M, Cevallos F, Cava R, Ong N 2020 Science 368 534 Google Scholar
[11]	Wang S, Feng X, Fang J Z, et al. 2024 arXiv: 2405.12592 [cond-mat.str-el]
[12]	Ran S, Liu I L, Eo Y S, Campbell D J, Neves P M, Fuhrman W T, Saha S R, Eckberg C, Kim H, Graf D 2019 Nat. Phys. 15 1250 Google Scholar
[13]	Zhou H, Holleis L, Saito Y, Cohen L, Huynh W, Patterson C L, Yang F, Taniguchi T, Watanabe K, Young A F 2022 Science 375 774 Google Scholar
[14]	Wei X, Tian C, Cui H, Li Y, Liu S, Feng Y, Cui J, Song Y, Wang Z, Chen J H 2023 2D Materials 10 015010 Google Scholar
[15]	Ortiz B R, Teicher S M, Hu Y, Zuo J L, Sarte P M, Schueller E C, Abeykoon A M, Krogstad M J, Rosenkranz S, Osborn R 2020 Phys. Rev. Lett. 125 247002 Google Scholar
[16]	Ortiz B R, Sarte P M, Kenney E M, Graf M J, Teicher S M, Seshadri R, Wilson S D 2021 Phys. Rev. Mater. 5 034801 Google Scholar
[17]	Wang N, Chen K, Yin Q, Ma Y, Pan B, Yang X, Ji X, Wu S, Shan P, Xu S 2021 Phys. Rev. Res. 3 043018 Google Scholar
[18]	Mine A, Zhong Y, Liu J, Suzuki T, Najafzadeh S, Uchiyama T, Yin J X, Wu X, Shi X, Wang Z, Yao Y, Okazaki K 2024 arXiv: 2404.18472 [cond-mat.supr-con]
[19]	Ni S, Ma S, Zhang Y, Yuan J, Yang H, Lu Z, Wang N, Sun J, Zhao Z, Li D 2021 Chin. Phys. Lett. 38 057403 Google Scholar
[20]	Wei X, Tian C, Cui H, Zhai Y, Li Y, Liu S, Song Y, Feng Y, Huang M, Wang Z 2024 Nat. Commun. 15 5038 Google Scholar
[21]	Feng X, Jiang K, Wang Z, Hu J 2021 Sci. Bull. 66 1384 Google Scholar
[22]	Denner M M, Thomale R, Neupert T 2021 Phys. Rev. Lett. 127 217601 Google Scholar
[23]	Park T, Ye M, Balents L 2021 Phys. Rev. B 104 035142 Google Scholar
[24]	Chen H, Yang H, Hu B, Zhao Z, Yuan J, Xing Y, Qian G, Huang Z, Li G, Ye Y 2021 Nature 599 222 Google Scholar
[25]	Yu S L, Li J X 2012 Phys. Rev. B 85 144402 Google Scholar
[26]	Zhong Y, Liu J, Wu X, et al. 2023 Nature 617 488 Google Scholar
[27]	Ge J, Wang P, Xing Y, Yin Q, Wang A, Shen J, Lei H, Wang Z, Wang J 2024 Phys. Rev. X 14 021025 Google Scholar
[28]	Wollman D, Van Harlingen D, Lee W, Ginsberg D, Leggett A 1993 Phys. Rev. Lett. 71 2134 Google Scholar

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