Effect of electric and magnetic fields on the binding energy of a Coulomb impurity bound polaron in a cylindrical quantum dot

被引：18

作者：

Vartanian, Arshak L. ^{[1
]}

Vardanyan, Lyudvig A. ^{[2
]}

Kazaryan, Eduard M. ^{[2
]}

机构：

[1] Yerevan State Univ, Dept Solid State Phys, Yerevan 0025, Armenia

[2] Russian Armenian Univ, Dept Theoret Phys, Yerevan 0051, Armenia

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2008年 / 245卷 / 01期

关键词：

D O I：

10.1002/pssb.200743266

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The influence of electric and magnetic fields as well as electron-polar phonon interaction on an electron bound to a Coulomb impurity in a cylindrical quantum dot is studied theoretically. The interplay between the confinement effects due to applied fields, quantum-size confinements, and the electron-phonon coupling on the impurity binding energy is analyzed. Analytical expression for polaron energy has been obtained as a function of the QD sizes, intensities of the electric and magnetic fields and the position of the impurity in the QD. It is found that the correction on impurity binding energy due to the LO phonons are very important and cannot be neglected.

引用

页码：123 / 131

页数：9

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