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Clean 2D superconductivity in a bulk van der Waals superlattice

Author(s)
Devarakonda, Aravind; Inoue, Hisashi; Suzuki, Takehito; Fu, Liang; Checkelsky, Joseph
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Abstract
Advances in low-dimensional superconductivity are often realized through improvements in material quality. Apart from a small group of organic materials, there is a near absence of clean-limit two-dimensional (2D) superconductors, which presents an impediment to the pursuit of numerous long-standing predictions for exotic superconductivity with fragile pairing symmetries. We developed a bulk superlattice consisting of the transition metal dichalcogenide (TMD) superconductor 2<jats:italic>H</jats:italic>-niobium disulfide (2<jats:italic>H</jats:italic>-NbS<jats:sub>2</jats:sub>) and a commensurate block layer that yields enhanced two-dimensionality, high electronic quality, and clean-limit inorganic 2D superconductivity. The structure of this material may naturally be extended to generate a distinct family of 2D superconductors, topological insulators, and excitonic systems based on TMDs with improved material properties.
Date issued
2020-10
URI
https://hdl.handle.net/1721.1/128679
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Science
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Devarakonda, A. et al. “Clean 2D superconductivity in a bulk van der Waals superlattice.” Science, 370, 6513 (October 2020): 231-236 © 2020 The Author(s)
Version: Author's final manuscript
ISSN
0193-4511

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