| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1861232 | Physics Letters A | 2008 | 6 Pages |
Abstract
The confined longitudinal-optical (LO) phonon and surface-optical (SO) phonon modes of a free-standing quantum wire with ring geometry are discussed within the dielectric continuum (DC) approximation. Two branches of SO phonon modes have been investigated. The frequencies of the SO phonons are found to be dispersed and radius dependent for small size systems. When the wave vector qz→∞qz→∞, the frequencies of each SO modes converge to the frequency values of the single planar heterostructure.
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Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Qing-Hu Zhong,