Dresden 2014 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 101: Transport - Poster Session
TT 101.8: Poster
Thursday, April 3, 2014, 15:00–19:00, P2
Renormalization of subband anticrossings in interacting quantum wires with spin-orbit interactions — •Tobias Meng1, Jelena Klinovaja1,2, and Daniel Loss1 — 1Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland — 2Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
We discuss how electron-electron interactions renormalize the anticrossings between different subbands in quantum wires with spin-orbit interactions. Depending on the wire's parameters, interactions may either increase or decrease the width of the anticrossings. When the anticrossings are closed using a special combination of Rashba and Dresselhaus spin-orbit interactions, their width tends to zero as an interaction dependent power law of the spin-orbit couplings, which is a consequence of Luttinger liquid physics. Monitoring the closing of the anticrossings would allow to directly measure the related renormalization group (RG) scaling dimensions in an experiment.