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Radiative corrections to the long-wavelength optical-mode spectrum of the electron-phonon model: Absence of mode-splitting effects and hardening of the mode
journal contribution
posted on 2006-04-27, 13:56 authored by A.S. Alexandrov, J.R. SchriefferRenormalization of the phonon spectrum of the Einstein form due to a weak coupling with electrons is calculated. No splitting of the phonon mode is found. A q-dependent hardening of the long-wave optical phonons contrasts with the softening of acoustic phonons in a weakly coupled electron-phonon system and with the softening of all phonons in the strong-coupling polaronic regime.
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School
- Science
Department
- Physics
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ALEXANDROV and SCHRIEFFER, 1997. Radiative corrections to the long-wavelength optical-mode spectrum of the electron-phonon model: Absence of mode-splitting effects and hardening of the mode. Physical Review B, 56(21), pp 13731–13733Publisher
© American Physical SocietyPublication date
1997Notes
This article was published in the journal, Physical Review B [© American Physical Society]. It is also available at: http://link.aps.org/abstract/PRB/v56/p13731.ISSN
1098-0121Language
- en