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Quantum ground state control in superconductor-silicene structures: 0-pi transitions, phi(0)-junctions, and Majorana bound states
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Norwegian Univ Sci & Technol, Dept Phys, NTNU, N-7491 Trondheim, Norway..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
2016 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 94, no 18, article id 180505Article in journal (Refereed) Published
Abstract [en]

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 phi(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.

Place, publisher, year, edition, pages
2016. Vol. 94, no 18, article id 180505
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-309801DOI: 10.1103/PhysRevB.94.180505ISI: 000387536000001OAI: oai:DiVA.org:uu-309801DiVA, id: diva2:1056570
Funder
Carl Tryggers foundation G├Âran Gustafsson Foundation for promotion of scientific research at Uppala University and Royal Institute of TechnologySwedish Research CouncilSwedish Foundation for Strategic Research Knut and Alice Wallenberg Foundation
Available from: 2016-12-15 Created: 2016-12-07 Last updated: 2017-11-29Bibliographically approved

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