Berlin 2015 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 109: Transport: Majorana Fermions (jointly with DS, HL, MA, O)
TT 109.5: Vortrag
Freitag, 20. März 2015, 10:30–10:45, H 0104
Josephson current and Majorana bound states through 2DEG with Spin-Orbit Interaction — •Pasquale Marra1, Roberta Citro1,2, and Alessandro Braggio3 — 1SPIN-CNR, I-84084 Fisciano (Salerno), Italy — 2Dipartimento di Fisica “E. R. Caianiello”, Universitá di Salerno, I-84084 Fisciano (Salerno), Italy — 3SPIN-CNR, Via Dodecaneso 33, I-16146 Genova, Italy
We investigate the DC Josephson current in a two dimensional electron gas (2DEG) proximized with a s-wave superconductor, in the presence of spin-orbit interaction and magnetic field. Solving the Bogoliubov-De Gennes equations in the framework of a tight-binding Hamiltonian, we calculate the Andreev bound states, the Josephson current, and the Majorana polarization as a function of phase difference between the two superconductors. We therefore investigate the conditions under which Majorana bound states are localized at the system interfaces.