Quantum ground state control in superconductor-silicene structures: $0$-$\pi$ transitions, $\varphi_0$-junctions, and Majorana bound states

Phys. Rev. B 94, 180505 (2016) We demonstrate theoretically that proximity-induced superconductivity in silicene offers the possibility to exert strong quantum ground state control. We show that electrically controlled $0$-$\pi$ transitions occur in Josephson junctions in the presence of an exchange...

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Bibliographic Details
Main Authors Kuzmanovski, Dushko, Linder, Jacob, Black-Schaffer, Annica
Format Journal Article
LanguageEnglish
Published 10.05.2016
Subjects
Physics - Superconductivity
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Summary:Phys. Rev. B 94, 180505 (2016) We demonstrate theoretically that proximity-induced superconductivity in silicene offers the possibility to exert strong quantum ground state control. We show that electrically controlled $0$-$\pi$ transitions occur in Josephson junctions in the presence of an exchange field due to the buckling of the silicene lattice. We also discover that zigzag-oriented interfaces, featuring intervalley scattering, cause a $\varphi_0$ state with an applied electric field. Finally, we demonstrate that Majorana bound states along the silicene edge are tunable via the edge orientation, electric, and in-plane spin exchange fields.
DOI:10.48550/arxiv.1605.03197