Nonlinear conductivity of a holographic superconductor under constant electric field
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Journal Title
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2017-02-23
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Language
en
Pages
5
1-5
1-5
Series
PHYSICAL REVIEW D, Volume 95, issue 4
Abstract
The dynamics of a two-dimensional superconductor under a constant electric field E is studied by using the gauge-gravity correspondence. The pair breaking current induced by E first increases to a peak value and then decreases to a constant value at late times, where the superconducting gap goes to zero, corresponding to a normal conducting phase. The peak value of the current is found to increase linearly with respect to the electric field. Moreover, the nonlinear conductivity, defined as an average of the conductivity in the superconducting phase, scales as similar to E-2/3 when the system is close to the critical temperature T-c, which agrees with predictions from solving the time-dependent Ginzburg-Landau equation. Away from T-c, the E-2/3 scaling of the conductivity still holds when E is large.Description
Keywords
CONDENSED MATTER, STRING THEORY, GRAVITY
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Citation
Zeng, H B, Tian, Y, Fan, Z & Chen, C M 2017, ' Nonlinear conductivity of a holographic superconductor under constant electric field ', Physical Review D, vol. 95, no. 4, 046014, pp. 1-5 . https://doi.org/10.1103/PhysRevD.95.046014
