Eur. Phys. J. B 83, 481-486 (2011)
https://doi.org/10.1140/epjb/e2011-20193-y

Regular Article

Confined and interface polarons in cylindrical nanowires in an electric field

Department of Solid State Physics, Yerevan State University, Al. Manoogian 1, 0025 Yerevan, Armenia

^a e-mail: vardan@ysu.am

Received: 13 March 2011
Received in final form: 28 July 2011
Published online: 24 October 2011

Abstract

The effect of an electric field on the basic parameters of confined and interface polarons in cylindrical nanowires embedded in a non-polar matrix are studied theoretically for the first time. By using the Lee, Low, and Pines variational method, the analytical expressions for the quasi-one-dimensional Fröhlich polaron self-energy and effective mass are obtained as functions of the wire radius and the strength of the electric field applied perpendicular to the wire axis. We have shown that the polaron self-energy as well as effective mass strongly depents on both the strengths of the electric field and on the wire radius. This will be taken into account in the interpretation of optical phenomena related to polaron motion in cylindrical nanowire, when the effect of an applied electric field competes with the spatial quantum confinement.