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Article Dans Une Revue Physical Review B Année : 2018

Strong coupling and periodic potential at the Pb/Sb(111) interface

Résumé

Proximity phenomena between superconductors and topological semimetals are at the heart of the search for novel quantum states of matter. Here we show that the epitaxial interface between one- to three-atomic-layer Pb and the Sb(111) substrate has extremely high electronic transparency. As a result, Pb loses its superconducting and even its metallic properties; its electronic spectrum mimics the semimetallic density of states of Sb. Additional states arise from a threefold symmetric potential which develops at the Pb/Sb interface. Our experimental results are supported by DFT simulations which demonstrate that this potential arises from the corrugated structure of the Pb/Sb interface.
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hal-02357567 , version 1 (08-10-2021)

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T. Vincent, S. Vlaic, S. Pons, Tianzhen Zhang, H. Aubin, et al.. Strong coupling and periodic potential at the Pb/Sb(111) interface. Physical Review B, 2018, 98 (15), ⟨10.1103/PhysRevB.98.155440⟩. ⟨hal-02357567⟩
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