Surface optical phonons in a triaxial ellipsoidal quantum dot

被引：12

作者：

Reese, O

Voon, LCLY

Willatzen, M

机构：

[1] Worcester Polytech Inst, Dept Phys, Worcester, MA 01609 USA

[2] Univ So Denmark, Mads Clausen Inst, DK-6400 Sonderborg, Denmark

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 07期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.70.075401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The surface optical phonon eigenmodes in ellipsoidal quantum dots were calculated using the dielectric-continuum model. The problem is exactly solvable in terms of ellipsoidal coordinates and the eigenmodes are written in terms of Lame polynomials. A study of the mode frequency dependence on the shape of the dots is carried out. This represents a generalization over earlier work on spheres and spheroids. Differences in the results obtained using an optically active and an optically passive host is presented. The size independence of the mode frequencies for a quantum dot of arbitrary shape is proven.

引用

页码：075401 / 1

页数：7

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