Interface-induced superconductivity in magnetic topological insulators-Reference-Cited by-同舟云学术

Interface-induced superconductivity in magnetic topological insulators

Published:2024-02-09 Issue:6683 Volume:383 Page:634-639
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Yi Hemian¹^ORCID,Zhao Yi-Fan¹,Chan Ying-Ting²^ORCID,Cai Jiaqi³^ORCID,Mei Ruobing¹^ORCID,Wu Xianxin⁴^ORCID,Yan Zi-Jie¹^ORCID,Zhou Ling-Jie¹^ORCID,Zhang Ruoxi¹^ORCID,Wang Zihao¹^ORCID,Paolini Stephen¹^ORCID,Xiao Run¹^ORCID,Wang Ke⁵^ORCID,Richardella Anthony R.¹⁵^ORCID,Singleton John⁶^ORCID,Winter Laurel E.⁶^ORCID,Prokscha Thomas⁷^ORCID,Salman Zaher⁷^ORCID,Suter Andreas⁷^ORCID,Balakrishnan Purnima P.⁸^ORCID,Grutter Alexander J.⁸^ORCID,Chan Moses H. W.¹^ORCID,Samarth Nitin¹⁵⁹^ORCID,Xu Xiaodong³¹⁰^ORCID,Wu Weida²^ORCID,Liu Chao-Xing¹^ORCID,Chang Cui-Zu¹⁵^ORCID

Affiliation:

1. Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.

2. Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA.

3. Department of Physics, University of Washington, Seattle, WA 98195, USA.

4. CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China.

5. Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA.

6. National High Magnetic Field Laboratory, Los Alamos, NM 87544, USA.

7. Laboratory for Muon Spectroscopy, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.

8. NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.

9. Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA.

10. Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA.

Abstract

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.

Publisher

American Association for the Advancement of Science (AAAS)

Link

https://www.science.org/doi/pdf/10.1126/science.adk1270

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