Theory of quantum fluctuating superconductivity in incoherent metals

Event Dates: 

Friday, November 13, 2015 - 9:30am

CTQM Seminar Type: 

  • CTQM Seminar

Seminar Location: 

  • Duane Physics Room G126

Speaker Name(s): 

Sean Hartnoll

Speaker Affiliation(s): 

Stanford University

Abstract, Event Details: 

Quantum superconducting fluctuations can be important in two dimensional, disordered thin films (and elsewhere). They lead to the appearance of a two dimensional metallic state with a nonzero and finite resistivity. This state of matter is still theoretically poorly understood. I will describe an effective field theory description of this state that is based on superfluid hydrodynamics with the additional input that the phase of the order parameter is relaxed, due to Coulomb-type interactions. This formalism allows explicit results for the dc conductivity as a well as predictions for Drude-like and cyclotron-like poles in the optical conductivity.