Researchers from Harvard, Sabanci, and Peking Universities have uncovered the quantum acoustical Drude peak shift in strange metals. Their study, published in Physical Review Letters, reveals that the high-temperature absorption peaks in these metals are due to dynamical lattice disorder. Using a new quantum acoustics framework, they showed how electrons interact with lattice vibrations, causing the optical conductivity peak to shift to higher frequencies with increasing temperatures. This work helps explain the unique electronic properties of strange metals and suggests further research in quantum acoustics could unravel more mysteries.
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