Title :
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
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;
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
DOI :
10.1109/CLEOPR.2009.5292608
