Advanced

Electronic structure of [100]-oriented free-standing semiconductor nanowires

Persson, Martin LU and Xu, Hongqi LU (2004) In Nano Letters 4(12). p.2409-2414
Abstract
We report on a theoretical study of the electronic structure of [100]-oriented free-standing III-V semiconductor nanowires with quadratic (square wire) and rectangular (nanobelt) cross-sections based on an atomistic tight-binding approach. It is shown that at the same cross-section aspect ratio, the characteristics of the band structure and state wave functions of the nanowires in the vicinity of the band edges are insensitive to variation of the lateral size, although the band energies show a strong dependence on the lateral size. It is also shown that the effective mass of the conduction bands of the nanowires is systematically enhanced with decrease of the nanowire size, and k(.)p analysis generally overestimates the effective mass... (More)
We report on a theoretical study of the electronic structure of [100]-oriented free-standing III-V semiconductor nanowires with quadratic (square wire) and rectangular (nanobelt) cross-sections based on an atomistic tight-binding approach. It is shown that at the same cross-section aspect ratio, the characteristics of the band structure and state wave functions of the nanowires in the vicinity of the band edges are insensitive to variation of the lateral size, although the band energies show a strong dependence on the lateral size. It is also shown that the effective mass of the conduction bands of the nanowires is systematically enhanced with decrease of the nanowire size, and k(.)p analysis generally overestimates the effective mass enhancement. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nano Letters
volume
4
issue
12
pages
2409 - 2414
publisher
The American Chemical Society
external identifiers
  • wos:000225681300019
  • scopus:10844254090
ISSN
1530-6992
DOI
10.1021/nl0485049
language
English
LU publication?
yes
id
e49dc7e9-a7b0-4e9e-a253-e9bc20527ec0 (old id 259160)
date added to LUP
2007-10-29 15:38:19
date last changed
2017-08-27 05:41:04
@article{e49dc7e9-a7b0-4e9e-a253-e9bc20527ec0,
  abstract     = {We report on a theoretical study of the electronic structure of [100]-oriented free-standing III-V semiconductor nanowires with quadratic (square wire) and rectangular (nanobelt) cross-sections based on an atomistic tight-binding approach. It is shown that at the same cross-section aspect ratio, the characteristics of the band structure and state wave functions of the nanowires in the vicinity of the band edges are insensitive to variation of the lateral size, although the band energies show a strong dependence on the lateral size. It is also shown that the effective mass of the conduction bands of the nanowires is systematically enhanced with decrease of the nanowire size, and k(.)p analysis generally overestimates the effective mass enhancement.},
  author       = {Persson, Martin and Xu, Hongqi},
  issn         = {1530-6992},
  language     = {eng},
  number       = {12},
  pages        = {2409--2414},
  publisher    = {The American Chemical Society},
  series       = {Nano Letters},
  title        = {Electronic structure of [100]-oriented free-standing semiconductor nanowires},
  url          = {http://dx.doi.org/10.1021/nl0485049},
  volume       = {4},
  year         = {2004},
}