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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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.
DepartmentMassachusetts Institute of Technology. Department of Physics
American Association for the Advancement of Science (AAAS)
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)
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