ZhETF, Vol. 135,
No. 6,
p. 1173 (June 2009)
(English translation - JETP,
Vol. 108, No. 6,
p. 1019,
June 2009
available online at www.springer.com
)
TWO-SITE MODEL FOR A SMALL POLARON: MASS RENORMALIZATION AND OPTICAL CONDUCTIVITY
Yavidov B.
Received: February 2, 2009
PACS: 63.20.kd, 63.20.kg, 71.38.Ht, 71.38.Cn, 78.67.-n
The renormalization of the mass of an electron interacting with many ions of a lattice via the long-range (Fröhlich) electron-phonon interaction and optical absorption of electrons are studied at zero temperature. Ions are assumed to be isotropic three-dimensional oscillators. The optical conductivity and the renormalized mass of small adiabatic Fröhlich polarons are calculated and compared with those of small adiabatic Holstein polarons.
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