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Interface-induced superconductivity in magnetic topological insulators.
Yi, Hemian; Zhao, Yi-Fan; Chan, Ying-Ting; Cai, Jiaqi; Mei, Ruobing; Wu, Xianxin; Yan, Zi-Jie; Zhou, Ling-Jie; Zhang, Ruoxi; Wang, Zihao; Paolini, Stephen; Xiao, Run; Wang, Ke; Richardella, Anthony R; Singleton, John; Winter, Laurel E; Prokscha, Thomas; Salman, Zaher; Suter, Andreas; Balakrishnan, Purnima P; Grutter, Alexander J; Chan, Moses H W; Samarth, Nitin; Xu, Xiaodong; Wu, Weida; Liu, Chao-Xing; Chang, Cui-Zu.
Affiliation
  • Yi H; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Zhao YF; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Chan YT; Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA.
  • Cai J; Department of Physics, University of Washington, Seattle, WA 98195, USA.
  • Mei R; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Wu X; CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China.
  • Yan ZJ; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Zhou LJ; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Zhang R; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Wang Z; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Paolini S; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Xiao R; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Wang K; Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA.
  • Richardella AR; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Singleton J; Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA.
  • Winter LE; National High Magnetic Field Laboratory, Los Alamos, NM 87544, USA.
  • Prokscha T; National High Magnetic Field Laboratory, Los Alamos, NM 87544, USA.
  • Salman Z; Laboratory for Muon Spectroscopy, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.
  • Suter A; Laboratory for Muon Spectroscopy, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.
  • Balakrishnan PP; Laboratory for Muon Spectroscopy, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.
  • Grutter AJ; NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
  • Chan MHW; NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
  • Samarth N; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Xu X; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Wu W; Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA.
  • Liu CX; Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
  • Chang CZ; Department of Physics, University of Washington, Seattle, WA 98195, USA.
Science ; 383(6683): 634-639, 2024 Feb 09.
Article in En | MEDLINE | ID: mdl-38330133
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.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2024 Document type: Article Affiliation country: United States
Fulltext
Add to My VHL
Print
XML
PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2024 Document type: Article Affiliation country: United States