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Title of Article

PHONON DAMPING AND CRYSTAL CONDUCTIVITY


Issue
4
Date
2011

Section
SOLID-STATE PHYSICS

Article type
scientific article
UDC
538.935
Pages
36-42
Keywords
phonon damping, polaron effect, polaron large of radius, mass of polaron, optical phonons, conductivity tensor


Authors
Efremov Gennadiy Fedorovich
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo

Petrov Dmitriy Alekseevich
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo

Maslov Andrey Olegovich
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo


Abstract
Crystal polaron conductivity is studied taking into account the crystal lattice deformation by a conduction electron. In addition, the concept of phonon damping is developed which allows one to take into account fluctuation and dissipative mechanisms of conduction electron and phonon field interaction as well as the change of the crystal lattice dispersion law. The stochastic equation has been derived for the electron coordinate operator describing Brownian motion of an electron in the crystal. The conductivity tensor of the system studied has been determined.

File (in Russian)