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arXiv · 1605.03197

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

Dushko Kuzmanovski·Jacob Linder·Annica Black-Schaffer
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Abstract

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.

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Dushko Kuzmanovski, Jacob Linder, Annica Black-Schaffer. 2016-05-10. Quantum ground state control in superconductor-silicene structures: $0$-$\pi$ transitions, $\varphi_0$-junctions, and Majorana bound states. https://doi.org/10.1103/physrevb.94.180505

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