Approximate scaling relation for the anharmonic electron-phonon problem

Details Approximate scaling relation for the anharmonic electron-phonon problem Approximate scaling relation for the anharmonic electron-phonon problem

1999-06-10

arxiv.org/abs/cond-mat/9906143v1

Phys. Rev. B 61, R838--841 (2000)

Physics

Condensed Matter

Superconductivity

5 pages, 6 figures, ReVTeX

Scientific paper

10.1103/PhysRevB.61.R838

An approximate scaling relation is found for the transition temperature to a charge-density-wave instability in the anharmonic electron-phonon problem, which maps a wide range of interaction strengths, anharmonicities, and phonon frequencies onto a common functional form. The relation employs the wave-function renormalization parameter and is valid even for systems that are not Fermi liquids.

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