Quantum-Acoustical Drude Peak Shift
Quantum Physics
2024-07-12 v3
Abstract
Quantum acoustics -- a recently developed framework parallel to quantum optics -- establishesa nonperturbative and coherent treatment of the electron-phonon interaction in real space. The quantum-acoustical representation reveals a displaced Drude peak hid ing in plain sight within the venerable Fr\"ohlich model: the optical conductivity exhibits a finite frequency maximum in the far-infrared range and the d.c. conductivity is suppressed. Our results elucidate the origin of the high-temperature absorption peaks in strange or bad metals, revealing that dynamical lattice disorder steers the system towards a non-Drude behavior
Cite
@article{arxiv.2310.19143,
title = {Quantum-Acoustical Drude Peak Shift},
author = {J. Keski-Rahkonen and X. -Y. Ouyang and S. Yuan and A. M. Graf and A. Aydin and E. J. Heller},
journal= {arXiv preprint arXiv:2310.19143},
year = {2024}
}