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Induced Topological Superconductivity in a BiSbTeSe₂-Based Josephson Junction.

ABSTRACT: A 4 π -periodic supercurrent through a Josephson junction can be a consequence of the presence of Majorana bound states. A systematic study of the radio frequency response for several temperatures and frequencies yields a concrete protocol for examining the 4 π -periodic contribution to the supercurrent. This work also reports the observation of a 4 π -periodic contribution to the supercurrent in BiSbTeSe 2 -based Josephson junctions. As a response to irradiation by radio frequency waves, the junctions showed an absence of the first Shapiro step. At high irradiation power, a qualitative correspondence to a model including a 4 π -periodic component to the supercurrent is found.

SUBMITTER: de Ronde B

PROVIDER: S-EPMC7221935 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Induced Topological Superconductivity in a BiSbTeSe<sub>2</sub>-Based Josephson Junction.

de Ronde Bob B Li Chuan C Huang Yingkai Y Brinkman Alexander A

Nanomaterials (Basel, Switzerland) 20200421 4

A 4 π -periodic supercurrent through a Josephson junction can be a consequence of the presence of Majorana bound states. A systematic study of the radio frequency response for several temperatures and frequencies yields a concrete protocol for examining the 4 π -periodic contribution to the supercurrent. This work also reports the observation of a 4 π -periodic contribution to the supercurrent in BiSbTeSe 2 -based Josephson junctions. As a response to irradiation by radio frequency waves, the ju ...[more]

PMID: 32326139

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