论文标题
电子 - 音波流体动力学
Electron-phonon hydrodynamics
论文作者
论文摘要
假设可以忽略UMKLAPP过程，我们发展了与各向同性声音声子结合的电子的流体动力学理论。在低温下，液体大致是伽利亚不变的。在高温下，流体几乎是相对论的。在中等温度下，在三维系统中有七个具有非常规热力学特性和流体动力传输系数的额外温度状态。我们预测不一致的传输系数，剪切和霍尔粘度以及等离子体分散关系中电子音纸流体的定性特征。我们的理论可能与许多量子材料相关，在这些量子材料中，已经提出了强大的电子散射以构成流体动力学制度的基础，包括$ \ mathrm {wte} _2 $，$ \ mathrm {wp} _2 _2 $，和$ \ m atrm {ptsn} _4 $。
We develop the theory of hydrodynamics of an isotropic Fermi liquid of electrons coupled to isotropic acoustic phonons, assuming that umklapp processes may be neglected. At low temperatures, the fluid is approximately Galilean invariant; at high temperatures, the fluid is nearly relativistic; at intermediate temperatures, there are seven additional temperature regimes with unconventional thermodynamic properties and hydrodynamic transport coefficients in a three-dimensional system. We predict qualitative signatures of electron-phonon fluids in incoherent transport coefficients, shear and Hall viscosity, and plasmon dispersion relations. Our theory may be relevant for numerous quantum materials where strong electron-phonon scattering has been proposed to underlie a hydrodynamic regime, including $\mathrm{WTe}_2$, $\mathrm{WP}_2$, and $\mathrm{PtSn}_4$.
