Quantum ground state control in superconductor-silicene structures: 0-pi transitions, phi(0)-junctions, and Majorana bound states
2016 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 94, no 18, 180505Article in journal (Refereed) Published
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, 180505
IdentifiersURN: urn:nbn:se:uu:diva-309801DOI: 10.1103/PhysRevB.94.180505ISI: 000387536000001OAI: oai:DiVA.org:uu-309801DiVA: diva2:1056570
FunderCarl Tryggers foundation Göran 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