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Article Abstract
Perturbative considerations account for the properties of conventional metals, including the range of temperatures where the transport scattering rate is 1/ = 2, where is a dimensionless strength of the electron-phonon coupling. The fact that measured values satisfy ≲ 1 has been noted in the context of a possible "Planckian" bound on transport. However, since the electron-phonon scattering is quasielastic in this regime, no such Planckian considerations can be relevant. We present and analyze Monte Carlo results on the Holstein model which show that a different sort of bound is at play: a "stability" bound on consistent with metallic transport. We conjecture that a qualitatively similar bound on the strength of residual interactions, which is often stronger than Planckian, may apply to metals more generally.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9934301 | PMC |
| http://dx.doi.org/10.1073/pnas.2216241120 | DOI Listing |
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