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TT: Fachverband Tiefe Temperaturen

TT 94: Low-Dimensional Systems: Oxide Hetero-Interfaces

TT 94.6: Talk

Thursday, April 3, 2014, 16:30–16:45, HSZ 204

The Rashba spin-orbit coupling for superconductivity in oxide interfaces — •Stefan Beyl, Peter P. Orth, and Jörg Schmalian — Institut für Theorie der Kondensierten Materie, Karlsruher Institut für Technologie, Karlsruhe, Deutschland

We investigate the role of the Rashba spin-orbit coupling on the superconducting order parameter and the phase stiffness at the interface of LaAlO₃ and SrTiO₃. In particular, we analyze the gate controlled crossover between BCS superconductivity and Bose-Einstein condensation of Cooper pairs, amplified by the Rashba coupling and the possibility of a phase fluctuation induced quantum critical point.