Surface superconductivity in the topological Weyl semimetal t-PtBi₂.

ABSTRACT: Topological superconductivity is a promising concept for generating fault-tolerant qubits. Early experimental studies looked at hybrid systems and doped intrinsic topological or superconducting materials at very low temperatures. However, higher critical temperatures are indispensable for technological exploitation. Recent angle-resolved photoemission spectroscopy results have revealed that superconductivity in the type-I Weyl semimetal-trigonal PtBi₂ (t-PtBi₂)-is located at the Fermi-arc surface states, which renders the material a potential candidate for intrinsic topological superconductivity. Here we show, using scanning tunnelling microscopy and spectroscopy, that t-PtBi₂ presents surface superconductivity at elevated temperatures (5 K). The gap magnit

SUBMITTER: Schimmel S 

PROVIDER: S-EPMC11568133 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature