Ferromagnetic impurity induced Majorana zero mode in iron-based superconductors

doi:10.1103/PhysRevB.106.L180504

	Ferromagnetic impurity induced Majorana zero mode in iron-based superconductors
	Song, Rui 1,2,3; Zhang, Ping 2,4,5; He, Xian-Tu 2,5; Hao, Ning 3
刊名	PHYSICAL REVIEW B
	2022-11-15
卷号	106
ISSN号	2469-9950
DOI	10.1103/PhysRevB.106.L180504
通讯作者	Zhang, Ping(zhang_ping@iapcm.ac.cn)
英文摘要	Recent experiments reported the puzzling zero-energy modes associated with ferromagnetic impurities in some iron-based superconductors with topological band structures. Here, we show that a sufficiently strong exchange coupling between a ferromagnetic impurity and a substrate can trigger a quantum phase transition, beyond which the phase of the topological surface superconducting order parameter around the impurity acquires a sign change. In such a case, we prove that besides a pair of impurity induced trivial Yu-Shiba-Rusinov states, a degenerate pair of Majorana modes can be induced at the boundary separating the two sign-change regimes and trapped around the impurity in the topological surface superconducting state. Furthermore, we show that our theory can explain the controversial observations and confusing features of the zero-energy modes from recent experiments in some iron-based superconductors.
资助项目	National Key R&D Program of China[2022YFA1403200] ; National Key R&D Program of China[2017YFA0303201] ; National Natural Science Foundation of China[92265104] ; National Natural Science Foundation of China[12022413] ; National Natural Science Foundation of China[11674331] ; National Natural Science Foundation of China[11625415] ; Chinese Academy of Sciences[XDB33030100] ; 100 Talents Project of the Chinese Academy of Sciences ; Collaborative Innovation Program of Hefei Science Center, CAS[2020HSCCIP002] ; CASHIPS Director's Fund[BJPY2019B03] ; Science Challenge Project[TZ2016001] ; Major Basic Program of the Natural Science Foundation of Shandong Province[ZR2021ZD01] ; High Magnetic Field Laboratory of Anhui Province, China
WOS关键词	ELECTRONIC-STRUCTURE
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000885354500003
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; 100 Talents Project of the Chinese Academy of Sciences ; Collaborative Innovation Program of Hefei Science Center, CAS ; CASHIPS Director's Fund ; Science Challenge Project ; Major Basic Program of the Natural Science Foundation of Shandong Province ; High Magnetic Field Laboratory of Anhui Province, China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131661]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Ping
作者单位	1.Peking Univ, Ctr Appl Phys & Technol, Sch Phys, HEDPS, Beijing 100871, Peoples R China 2.Peking Univ, Ctr Appl Phys & Technol, Sch Engn, HEDPS, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Univ Sci & Technol China, Anhui Key Lab Condensed Matter Phys Extreme Condit, High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China 4.Qufu Normal Univ, Sch Phys & Phys Engn, Qufu 273165, Peoples R China 5.Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China
推荐引用方式 GB/T 7714	Song, Rui,Zhang, Ping,He, Xian-Tu,et al. Ferromagnetic impurity induced Majorana zero mode in iron-based superconductors[J]. PHYSICAL REVIEW B,2022,106.
APA	Song, Rui,Zhang, Ping,He, Xian-Tu,&Hao, Ning.(2022).Ferromagnetic impurity induced Majorana zero mode in iron-based superconductors.PHYSICAL REVIEW B,106.
MLA	Song, Rui,et al."Ferromagnetic impurity induced Majorana zero mode in iron-based superconductors".PHYSICAL REVIEW B 106(2022).