A feature in phonon dispersion caused by a nonanalytic wavevector dependence of electronic screening. In a quasi-one-dimensional conductor, enhanced response near can soften a lattice mode and signal an approaching Peierls transition.

Ancestors (9)

  1. Electron-phonon interaction
  2. Phonon
  3. Bose-Einstein distribution
  4. Bose-Einstein statistics
  5. Quantum ideal-gas statistics
  6. Statistical physics
  7. Branches of physics
  8. Physics
  9. Home

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Kohn anomaly by Wikipedia Bot 1
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