Dresden 2017 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 39: Superconductivity: (General) Theory

TT 39.14: Talk

Wednesday, March 22, 2017, 13:00–13:15, HSZ 103

Multi-particle instability in an imbalanced electron gas — •Gareth Conduit and Thomas Whitehead — Department of Physics, University of Cambridge, UK

We show that in an imbalanced electron gas weak attractive interactions induce a multi-particle instability, binding multiple electrons together. The maximum binding energy per particle is achieved where the ratio of the number of up/down spin particles in the instability is equal to the ratio of the up/down spin density of states. We use this instability to propose a new superconducting ground state that has lower energy than the FFLO state.