Quantum-Acoustical Drude Peak Shift

• URL: http://arxiv.org/abs/2310.19143v3
• Date: Wed, 10 Jul 2024 19:44:59 GMT
• Title: Quantum-Acoustical Drude Peak Shift
• Authors: J. Keski-Rahkonen, X. -Y. Ouyang, S. Yuan, A. M. Graf, A. Aydin, E. J. Heller,
• Abstract summary: We show a displaced Drude peak hid ing in plain sight within the venerable Fr"ohlich model. Our results elucidate the origin of the high-temperature absorption peaks in strange or bad metals.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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

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