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Author Millis, A. J. ♦ Mueller, R. ♦ Shraiman, B. I.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ MATERIALS SCIENCE ♦ RARE EARTH COMPOUNDS ♦ MAGNETORESISTANCE ♦ ELECTRON GAS ♦ ELECTRON-PHONON COUPLING ♦ MANGANESE OXIDES ♦ FERMI GAS ♦ POLARONS ♦ MEAN-FIELD THEORY ♦ JAHN-TELLER EFFECT ♦ TEMPERATURE DEPENDENCE
Abstract We use the dynamical mean-field method to study a model of electrons Jahn-Teller coupled to localized classical oscillators and ferromagnetically coupled to {open_quote}{open_quote}core spins.{close_quote}{close_quote} The model, we argue, contains the essential physics of the {open_quote}{open_quote}colossal magnetoresistance{close_quote}{close_quote} manganites Re{sub 1{minus}{ital x}}{ital A}{sub {ital x}}MnO{sub 3}. We determine the different regimes of the model and present results for the temperature and frequency dependence of the conductivity, the electron spectral function, and the root-mean-square lattice parameter fluctuations. We compare our results to data and give a qualitative discussion of important physics not included in the calculation. Extensive use is made of results from a companion paper [Phys. Rev. B {bold 54}, 5389 (1996)]. {copyright} {ital 1996 The American Physical Society.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-08-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 54
Issue Number 8


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