标题： 非互易电子液体的水动力流中的光电效应 显示英文标题

标题： Photogalvanic effect in hydrodynamic flows of nonreciprocal electron liquids

摘要： 我们研究由交流电场驱动的非线性流体动力学电子输运。 在具有破坏时间反演（TR）对称性的非中心对称导体中，这种液体的非线性流动是非互易的，从而产生一个与交流电场振幅平方成正比的直流电流$I^{DC}$。 这是线性光电流效应（PGE）的流体动力学类比，它出现在具有破坏TR对称性的体非中心对称材料中。 $I^{DC}$的大小取决于电子流体的性质和流动的几何形状，可以通过两个无量纲参数来表征：非互易数$\mathcal{N}$和频率相关的振动数$\mathcal{R}$。 由于流体动力学输运的非局域性，在交流驱动的低频下，$I^{DC}$是超广延的。 电流的交流分量也受到非互易性的强烈影响：滞回电流-电压关系变得不对称，这可以解释为记忆保持时间的非互易性。 显示英文摘要

摘要： We study nonlinear hydrodynamic electron transport driven by an AC electric field. In noncentrosymmetric conductors with broken time-reversal (TR) symmetry the nonlinear flow of such liquids is nonreciprocal, giving rise to a DC current $I^{DC}$ that is quadratic in the amplitude of the AC electric field. This is the hydrodynamic analogue of the linear photogalvanic effect (PGE), which arises in bulk noncentrosymmetric materials with broken TR symmetry. The magnitude of $I^{DC}$ depends on both the properties of the electron fluid and the geometry of the flow, and may be characterized by two dimensionless parameters: the nonreciprocity number $\mathcal{N}$, and the frequency-dependent vibrational number $\mathcal{R}$. Due to nonlocality of hydrodynamic transport, at low frequencies of the AC drive, $I^{DC}$ is super-extensive. The AC component of the electric current is likewise strongly affected by nonreciprocity: the hysteretic current-voltage dependence becomes skewed, which can be interpreted in terms of nonreciprocity of the memory retention time.