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Title: Radiative corrections to the long-wavelength optical-mode spectrum of the electron-phonon model: Absence of mode-splitting effects and hardening of the mode
Authors: Alexandrov, A.S.
Schrieffer, J.R.
Issue Date: 1997
Publisher: © American Physical Society
Citation: 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 13731–13733
Abstract: Renormalization 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.
Description: 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.
URI: https://dspace.lboro.ac.uk/2134/1316
ISSN: 1098-0121
Appears in Collections:Published Articles (Physics)

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