Interface-induced superconductivity in magnetic topological insulators

被引：15

作者：

Yi, Hemian ^{[1
]}

Zhao, Yi-Fan ^{[1
]}

Chan, Ying-Ting ^{[2
]}

Cai, Jiaqi ^{[3
]}

Mei, Ruobing ^{[1
]}

Wu, Xianxin ^{[4
]}

Yan, Zi-Jie ^{[1
]}

Zhou, Ling-Jie ^{[1
]}

Zhang, Ruoxi ^{[1
]}

Wang, Zihao ^{[1
]}

Paolini, Stephen ^{[1
]}

Xiao, Run ^{[1
]}

Wang, Ke ^{[5
]}

Richardella, Anthony R. ^{[1
,5
]}

Singleton, John ^{[6
]}

Winter, Laurel E. ^{[6
]}

Prokscha, Thomas ^{[7
]}

Salman, Zaher ^{[7
]}

Suter, Andreas ^{[7
]}

Balakrishnan, Purnima P. ^{[8
]}

Grutter, Alexander J. ^{[8
]}

Chan, Moses H. W. ^{[1
]}

Samarth, Nitin ^{[1
,5
,9
]}

Xu, Xiaodong ^{[3
,10
]}

Wu, Weida ^{[2
]}

Liu, Chao-Xing ^{[1
]}

Chang, Cui-Zu ^{[1
,5
]}

机构：

[1] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[2] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[3] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[4] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China

[5] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[6] Natl High Magnet Field Lab, Los Alamos, NM 87544 USA

[7] Paul Scherrer Inst, Lab Muon Spect, CH-5232 Switzerland, Switzerland

[8] NIST Ctr Neutron Res, Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

[9] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

[10] Univ Washington, Dept Mat Sci Engn, Seattle, WA 98195 USA

来源：

SCIENCE | 2024年 / 383卷 / 6683期

关键词：

SIGNATURES; SUPERFLUID; SB2TE3; BI2SE3; BI2TE3;

D O I：

10.1126/science.adk1270

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The interface between two different materials can show unexpected quantum phenomena. In this study, we used molecular beam epitaxy to synthesize heterostructures formed by stacking together two magnetic materials, a ferromagnetic topological insulator (TI) and an antiferromagnetic iron chalcogenide (FeTe). We observed emergent interface-induced superconductivity in these heterostructures and demonstrated the co-occurrence of superconductivity, ferromagnetism, and topological band structure in the magnetic TI layer-the three essential ingredients of chiral topological superconductivity (TSC). The unusual coexistence of ferromagnetism and superconductivity is accompanied by a high upper critical magnetic field that exceeds the Pauli paramagnetic limit for conventional superconductors at low temperatures. These magnetic TI/FeTe heterostructures with robust superconductivity and atomically sharp interfaces provide an ideal wafer-scale platform for the exploration of chiral TSC and Majorana physics.

引用

页码：634 / 639

页数：6

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