Temperature dependence of the effective mass of the polaron in an asymmetry quantum dot

Author

Eerdunchaolu ; Xin, Wei

Author_Institution

Inst. of Condensed Matter Phys., Hebei Normal Univ. of Sci. & Technol., Qinhuangdao, China

fYear

2009

fDate

30-3 Aug. 2009

Firstpage

1

Lastpage

2

Abstract

The influences of the temperature on the effective mass of the weak-coupling polaron in an asymmetry quantum dot are studied by using the Tokuda´s improved linear-combination operator and the Lee-Low-Pines (LLP) variational method. The results indicate that the effective mass m* of the weak-coupling polaron is only related to the temperature parameter gamma and the electron-phonon coupling strength alpha, but it is independent of the confinement strength omega₁ (omega₂) of the quantum dot.

Keywords

electron-phonon interactions; polarons; quantum dots; Lee-Low-Pines variational method; Tokuda´s improved linear-combination operator; asymmetry quantum dot; electron-phonon coupling strength; weak-coupling polaron; Effective mass; Electrons; Magnetic anisotropy; Magnetic properties; Perpendicular magnetic anisotropy; Phonons; Physics; Potential well; Quantum dots; Temperature dependence; asymmetry quantum dot; effective mass; polaron; temperature dependence;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers & Electro Optics & The Pacific Rim Conference on Lasers and Electro-Optics, 2009. CLEO/PACIFIC RIM '09. Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-3829-7

Electronic_ISBN

978-1-4244-3830-3

Type

conf

DOI

10.1109/CLEOPR.2009.5292608

Filename

5292608