Nonlinear transport in a two dimensional holographic superconductor

Tutkimustuotos: Lehtiartikkeli

Tutkijat

Organisaatiot

  • Bohai University
  • Shanghai Key Laboratory of High Temperature Superconductors
  • National Central University

Kuvaus

The problem of nonlinear transport in a two-dimensional superconductor with an applied oscillating electric field is solved by the holographic method. The complex conductivity can be computed from the dynamics of the current for both the near- and nonequilibrium regimes. The limit of weak electric field corresponds to the near-equilibrium superconducting regime, where the charge response is linear and the conductivity develops a gap determined by the condensate. A larger electric field drives the system into a superconducting nonequilibrium steady state, where the nonlinear conductivity is quadratic with respect to the electric field. Increasing the amplitude of the applied electric field results in a far-from-equilibrium nonsuperconducting steady state with a universal linear conductivity of one. In the lower temperature regime we also find chaotic behavior of the superconducting gap, which results in a nonmonotonic field-dependent nonlinear conductivity.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli121901
Sivut1-5
JulkaisuPhysical Review D
Vuosikerta93
Numero12
TilaJulkaistu - 16 kesäkuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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