Berlin 2015 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 72: Low-Dimensional Systems: Poster Session
TT 72.6: Poster
Mittwoch, 18. März 2015, 15:00–18:00, Poster B
Superconducting fluctuations in systems with Rashba-spin-orbit coupling — •Stefan Beyl1, Peter P. Orth2, Mathias Scheurer2, and Jörg Schmalian2 — 1Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Deutschland — 2Institut für Theorie der Kondensierten Materie, Karlsruher Institut für Technologie, Deutschland
We investigate the BEC-BCS crossover in a two-dimensional system with Rashba-spin-orbit coupling. To include the effects of phase and amplitude fluctuations of the superconducting order parameter we perform a loop expansion of the effective field theory. We analyze in particular the probability of a low density superconducting quantum phase transition. The theory is relevant to LaAlO3/SrTiO3 interfaces and two-dimensional cold atom systems with synthetic gauge fields.