北海道大學工學部研究報告 = Bulletin of the Faculty of Engineering, Hokkaido University

Phase Diagram Approach to the Polaron Problem

Akihiro Hashimoto, Naoki Tokuda

Published Mar 25, 1986• 0 citations

Abstract

The problem of an electron interacting wlth acouseic as well as with optical modes of lattice vibrations is investlgated wlthin the modjfjed variatioRal scheme of the Lee-Low -Pines theory． lt is shown that the po｝aron changes its state according to the values of the electroR-optical phonon and ￡he electron-acoustic phonoR coupling constants by examining the ground-state energy， the mean numbers of the optical and acoustic phonons iR the cloud around the e｝ectron and the spatlal localization of the electron as fuRctions of the coupling

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