Effect of cross-sectional geometry on the RPA plasmons of quantum wires
Date
1994Source Title
Solid State Communications
Print ISSN
0038-1098
Publisher
Pergamon Press
Volume
92
Issue
12
Pages
947 - 950
Language
English
Type
ArticleItem Usage Stats
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Abstract
The effect of cross-sectional geometry on both the intrasubband plasmon and intersubband plasmon of a quantum wire is investigated within a two-subband RPA scheme. Exact analytical electronic wavefunctions for circular, elliptical and rectangular wires are employed within the infinite barrier approximation. It is found that for fixed cross-sectional area and linear electron concentration, the intrasubband plasmon energy is only marginally dependent on the wire geometry whereas the intersubband plasmon energy may change considerably due to its dependence on the electronic subband energy difference. © 1994.
Keywords
A. nanostructuresA. semiconductors
D. dielectric response
Approximation theory
Electromagnetic dispersion
Electromagnetic waves
Electron energy levels
Geometry
Mathematical models
Matrix algebra
Quantum theory
Semiconductor device structures
Waveform analysis
Cross sectional geometry
Dielectric response
Electronic subband energy difference
Electronic wavefunctions
Fixed cross sectional area
Infinite barrier approximation
Linear electron concentration
Plasmons
Quantum wires
Semiconductor quantum wells