[qmeso-seminar] семинар сектора 11 марта

[Mikhail A. Skvortsov]

                     СЕМИНАР СЕКТОРА КВАНТОВОЙ МЕЗОСКОПИКИ

                          пятница 11 марта, 15:00, ИТФ


                    _D. Shapiro_, A. Shnirman and A. Mirlin

 Current-phase relation and h/e-periodic critical current of a chiral Josephson
                       contact between 1D Majorana modes


We explore a long Josephson contact transporting Cooper pairs between 1D
charge-neutral chiral Majorana modes in the leads via charged Dirac chiral modes
in the normal region. We investigate the regimes of transparent and tunnel
junctions implemented in 3D topological insulator/superconductor/magnet hybrid
structures. The setup acts as a SQUID controlled by the magnetic flux enclosed
by the chiral loop of the normal region. This chirality leads to the fractional
h/e-periodic pattern of critical current. The current-phase relation can have
sawtooth-like shape with spikes at unusual even phases of 2\\pi n.