Ferromagnetic ordering of quasiparticles in nonequilibrium superconductors and the rise of domains

Abstract

It is shown that in nonequilibrium superconductors new states with spontaneous spin polarization of quasiparticles can exist due to the Fermi-liquid exchange interaction. The stability o) r both polarized and unpolarized nonequilibrium states with respect to small and finite fluctuations is discussed.It is shown that the nonequilibrium states of superconductors generated by the pumping of quasiparticles may be unstable with respect to both unpolarized and polarized finite fluctuations.

Dynamical spin polarization of excess quasi-particles in superconductors

“…The underlying mechanism differs from that considered in Ref. [41] for homogeneous quasi-particle states. For parameters of Al, such a polarized cluster may contain 10 4 quasi-particles and spread over microns.…”

Dynamical Spin Polarization of Excess Quasiparticles in Superconductors

“…The underlying mechanism differs from that considered in Ref. [43] for homogeneous quasiparticle states. For parameters of Al, such a polarized cluster may contain 10 4 quasiparticles and spread over microns.…”