Long-lived nonequilibrium superconductivity in a noncentrosymmetric Rashba semiconductor
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Abstract
We report non-equilibrium magnetodynamics in the Rashba-superconductor GeTe, which lacks inversion symmetry in the bulk. We find that at low temperature the system exhibits a non-equilibrium state, which decays on time scales that exceed conventional electronic scattering times by many orders of magnitude. This reveals a non-equilibrium magnetoresponse that is asymmetric under magnetic field reversal and, strikingly, induces a non-equilibrium superconducting state distinct from the equilibrium one. We develop a model of a Rashba system where non-equilibrium configurations relax on a finite timescale which captures the qualitative features of the data. We also obtain evidence for the slow dynamics in another non-superconducting Rashba system. Our work provides novel insights into the dynamics of non-centrosymmetric superconductors and Rashba systems in general.
Description
Keywords
Journal Title
Conference Name
Journal ISSN
2469-9969
Volume Title
Publisher
Publisher DOI
Sponsorship
EPSRC (1641845)
EPSRC (2138907)