| Issue |
Europhys. Lett.
Volume 33, Number 6, February III 1996
|
|
|---|---|---|
| Page(s) | 459 - 464 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00362-7 | |
| Published online | 01 September 2002 | |
Localization and electron-phonon interactions in disordered systems
1
Ames Laboratory and Department of
Physics and Astronomy, Iowa State University, Ames, IA 50011
2
Research Center of Crete, Foundation for Research and
Technology-Hellas, P.O. Box 1527,
71110 Heraklion, Crete, Greece
Received:
21
September
1995
Accepted:
3
January
1996
We study numerically the
time evolution of the coupled system of an electron, described by
a tight-binding model exhibiting metal-insulator transition, interacting with
vibrational degrees of freedom.
Depending on the initial energy of the electron, 
, its
effective mass, m*, on how close to the mobility edge it is and the strength
of the electron-phonon coupling, different types of localized and extended
states are formed. We find, that, in general, an increase of
decreases the ability of the system to form localized states, a large m*
does not always favor localization and polaron formation is facilitated near
the mobility edge.
PACS: 71.38.+i – Polarons and electron-phonon interactions / 71.50.+t – Localized single-particle electronic states (excluding impurities) / 52.35.Mw – Nonlinear waves and nonlinear wave propagation (including parametric effects, mode coupling, ponderomotive effects, etc.)
© EDP Sciences, 1996
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