Non-equilibrium Optical Conductivity: General Theory and Application to Transient Phases
Non-equilibrium Optical Conductivity: General Theory and Application to Transient Phases
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非平衡光学电导率：瞬态一般理论及其应用
DOI：
10.1103/physrevb.96.054506
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
A.J. Millis
中科院分区：
文献类型：
--
作者：
D.M. Kennes;E.Y. Wilner;D.R. Reichman;A.J. Millis
本文提出了一个关于脏限超导体光电导率和公度电荷密度波的非平衡理论。我们讨论了不同的实验相关的光场探测脉冲的电流响应，并表明，一个单一的频率定义的光学conductivityis难以解释的绝热极限。我们识别特征时域签名区分超导，正常金属，和电荷密度波状态。我们还提出了一种途径，直接解决的瞬时超流刚度的超导体的形状的探测光场。
A nonequilibrium theory of optical conductivity of dirty-limit superconductors and commensurate charge density wave is presented. We discuss the current response to different experimentally relevant light-field probe pulses and show that a single frequency definition of the optical conductivityis difficult to interpret out of the adiabatic limit. We identify characteristic time-domain signatures distinguishing between superconducting, normal-metal, and charge density wave states. We also suggest a route to directly address the instantaneous superfluid stiffness of a superconductor by shaping the probe light field.