Topological Transition of Superconductivity in Dirac Semimetal Nanowire Josephson Junctions

Revealing topological superconductivity in extended quantum spin Hall Josephson junctions.

Quantum spin Hall-superconductor hybrids are promising sources of topological superconductivity and Majorana modes, particularly given recent progress on HgTe and InAs/GaSb. We propose a new method of revealing topological superconductivity in extended quantum spin Hall Josephson junctions supporting "fractional Josephson currents." Specifically, we show that as one threads magnetic flux betwee...

Topological Superconductivity in Dirac Semimetals.

Dirac semimetals host bulk band-touching Dirac points and a surface Fermi loop. We develop a theory of superconducting Dirac semimetals. Establishing a relation between the Dirac points and the surface Fermi loop, we clarify how the nontrivial topology of Dirac semimetals affects their superconducting state. We note that the unique orbital texture of Dirac points and a structural phase transiti...

Topological Josephson φ0 junctions

Signatures of topological Josephson junctions

Yang Peng,1 Falko Pientka,1,2 Erez Berg,3 Yuval Oreg,3 and Felix von Oppen1 1Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, 14195 Berlin, Germany 2Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA 3Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, Israel (Received 3 May 2016; revised manuscri...

Charge transport in InAs nanowire Josephson junctions

Simon Abay,1,* Daniel Persson,1 Henrik Nilsson,2 Fan Wu,1 H. Q. Xu,2,3 Mikael Fogelström,1 Vitaly Shumeiko,1 and Per Delsing1,† 1Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Göteborg, Sweden 2Division of Solid State Physics, Lund University, Box 118, S-221 00 Lund, Sweden 3Key Laboratory for the Physics and Chemistry of Nanodevices and Depart...