Nonlinear transport in a two dimensional holographic superconductor

Hua Bi Zeng, Yu Tian, Zhe Yong Fan, Chiang Mei Chen

研究成果: 雜誌貢獻期刊論文同行評審

17 引文 斯高帕斯(Scopus)


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.

期刊Physical Review D
出版狀態已出版 - 16 6月 2016


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