Theory of topological spin Josephson junctions

Topological Josephson φ0 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...

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...

4p-periodic Josephson supercurrent in HgTe-based topological Josephson junctions

The Josephson effect describes the generic appearance of a supercurrent in a weak link between two superconductors. Its exact physical nature deeply influences the properties of the supercurrent. In recent years, considerable efforts have focused on the coupling of superconductors to the surface states of a three-dimensional topological insulator. In such a material, an unconventional induced p...

4π-periodic Josephson supercurrent in HgTe-based topological Josephson junctions

The Josephson effect describes the generic appearance of a supercurrent in a weak link between two superconductors. Its exact physical nature deeply influences the properties of the supercurrent. In recent years, considerable efforts have focused on the coupling of superconductors to the surface states of a three-dimensional topological insulator. In such a material, an unconventional induced p...