Supercurrent reversal in two-dimensional topological insulators

Article

关键词: SUPERCONDUCTIVITY;    EDGE;   

DOI  :  10.1103/PhysRevB.92.174515

来源: SCIE

【 摘 要 】

We calculate a supercurrent across a two-dimensional topological insulator subjected to an external magnetic field. When the edge states of a narrow two-dimensional topological insulator are hybridized, an external magnetic field can close the hybridization gap, thus driving a quantum phase transition from insulator to semimetal states of the topological insulator. We find a sign reversal of the supercurrent at the quantum phase transition revealing intrinsic properties of topological insulators via the Josephson effect.

【 授权许可】

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