摘要： 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. 出版日期： 2016-06-16 出處： Physical review. D, 2016-06, Vol.93 (12), Article 121901 識別號： ISSN: 2470-0010 識別號： ISSN: 2470-0037 識別號： ISSN: 2470-0029 識別號： EISSN: 2470-0029 識別號： DOI: 10.1103/PhysRevD.93.121901
