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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

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posted on 27.04.2006, 13:56 by A.S. Alexandrov, J.R. Schrieffer
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.

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  • Science

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  • 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 13731–13733

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© American Physical Society

Publication date

1997

Notes

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

1098-0121

Language

en

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