UNSPECIFIED (2005) Tuning correlation effects with electron-phonon interactions. JOURNAL OF LOW TEMPERATURE PHYSICS, 140 (1-2). pp. 77-89. doi:10.1007/s10909-005-6013-6 ISSN 0022-2291.

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Abstract

We investigate the effect of tuning the phonon energy on the correlation effects in models of electron-phonon interactions using DMFT. In the regime where itinerant electrons, instantaneous electron-phonon driven correlations and static distortions compete on similar energy scales, we find several interesting results including (1) A crossover from band to Mott behavior in the spectral function, leading to hybrid band/Mott features in the spectral function for phonon frequencies slightly larger than the band width. (2) Since the optical conductivity depends sensitively on the form of the spectral function, we show that such a regime should be observable through the low frequency form of the optical conductivity. (3) The resistivity has a double kondo peak arrangement.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	JOURNAL OF LOW TEMPERATURE PHYSICS
Publisher:	SPRINGER/PLENUM PUBLISHERS
ISSN:	0022-2291
Official Date:	July 2005
Dates:	Date Event July 2005 UNSPECIFIED
Volume:	140
Number:	1-2
Number of Pages:	13
Page Range:	pp. 77-89
DOI:	10.1007/s10909-005-6013-6
Publication Status:	Published

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