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Field-Tunable 0-?-Transitions in SnTe Topological Crystalline Insulator SQUIDs.

ABSTRACT: The manifestation of spin-orbit interactions, long known to dramatically affect the band structure of heavy-element compounds, governs the physics in the surging class of topological matter. A particular example is found in the new family of topological crystalline insulators. In this systems transport occurs at the surfaces and spin-momentum locking yields crystal-symmetry protected spin-polarized transport. We investigated the current-phase relation of SnTe thin films connected to superconducting electrodes to form SQUID devices. Our results demonstrate that an assisting in-plane magnetic field component can induce 0-?-transitions. We attribute these findings to giant g-factors and large spin-orbit coupling of SnTe topological crystalline insulator, which provides a new platform for investigation of the interplay between spin-orbit physics and topological transport.

SUBMITTER: Schonle J

PROVIDER: S-EPMC6374487 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Field-Tunable 0-π-Transitions in SnTe Topological Crystalline Insulator SQUIDs.

Schönle Joachim J Borisov Kiril K Klett Robin R Dyck Denis D Balestro Franck F Reiss Günter G Wernsdorfer Wolfgang W

Scientific reports 20190213 1

The manifestation of spin-orbit interactions, long known to dramatically affect the band structure of heavy-element compounds, governs the physics in the surging class of topological matter. A particular example is found in the new family of topological crystalline insulators. In this systems transport occurs at the surfaces and spin-momentum locking yields crystal-symmetry protected spin-polarized transport. We investigated the current-phase relation of SnTe thin films connected to superconduct ...[more]

PMID: 30760767

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