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Wurtzite GaAs Quantum Wires : One-Dimensional Subband Formation

Vainorius, Neimantas LU ; Lehmann, Sebastian LU ; Gustafsson, Anders LU ; Samuelson, Lars LU ; Dick, Kimberly A. LU and Pistol, Mats Erik LU (2016) In Nano Letters 16(4). p.2774-2780
Abstract

It is of contemporary interest to fabricate nanowires having quantum confinement and one-dimensional subband formation. This is due to a host of applications, for example, in optical devices, and in quantum optics. We have here fabricated and optically investigated narrow, down to 10 nm diameter, wurtzite GaAs nanowires which show strong quantum confinement and the formation of one-dimensional subbands. The fabrication was bottom up and in one step using the vapor-liquid-solid growth mechanism. Combining photoluminescence excitation spectroscopy with transmission electron microscopy on the same individual nanowires, we were able to extract the effective masses of the electrons in the two lowest conduction bands as well as the effective... (More)

It is of contemporary interest to fabricate nanowires having quantum confinement and one-dimensional subband formation. This is due to a host of applications, for example, in optical devices, and in quantum optics. We have here fabricated and optically investigated narrow, down to 10 nm diameter, wurtzite GaAs nanowires which show strong quantum confinement and the formation of one-dimensional subbands. The fabrication was bottom up and in one step using the vapor-liquid-solid growth mechanism. Combining photoluminescence excitation spectroscopy with transmission electron microscopy on the same individual nanowires, we were able to extract the effective masses of the electrons in the two lowest conduction bands as well as the effective masses of the holes in the two highest valence bands. Our results, combined with earlier demonstrations of thin crystal phase nanodots in GaAs, set the stage for the fabrication of crystal phase quantum dots having full three-dimensional confinement.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Nanowires, one-dimensional subbands, quantum confinement, wurtzite
in
Nano Letters
volume
16
issue
4
pages
7 pages
publisher
The American Chemical Society
external identifiers
  • Scopus:84964912218
  • WOS:000374274600097
ISSN
1530-6984
DOI
10.1021/acs.nanolett.6b00482
language
English
LU publication?
yes
id
cb3d3815-63d3-45e3-82de-c3b0b6cb85ed
date added to LUP
2016-09-30 14:58:06
date last changed
2017-01-01 08:35:38
@article{cb3d3815-63d3-45e3-82de-c3b0b6cb85ed,
  abstract     = {<p>It is of contemporary interest to fabricate nanowires having quantum confinement and one-dimensional subband formation. This is due to a host of applications, for example, in optical devices, and in quantum optics. We have here fabricated and optically investigated narrow, down to 10 nm diameter, wurtzite GaAs nanowires which show strong quantum confinement and the formation of one-dimensional subbands. The fabrication was bottom up and in one step using the vapor-liquid-solid growth mechanism. Combining photoluminescence excitation spectroscopy with transmission electron microscopy on the same individual nanowires, we were able to extract the effective masses of the electrons in the two lowest conduction bands as well as the effective masses of the holes in the two highest valence bands. Our results, combined with earlier demonstrations of thin crystal phase nanodots in GaAs, set the stage for the fabrication of crystal phase quantum dots having full three-dimensional confinement.</p>},
  author       = {Vainorius, Neimantas and Lehmann, Sebastian and Gustafsson, Anders and Samuelson, Lars and Dick, Kimberly A. and Pistol, Mats Erik},
  issn         = {1530-6984},
  keyword      = {Nanowires,one-dimensional subbands,quantum confinement,wurtzite},
  language     = {eng},
  month        = {04},
  number       = {4},
  pages        = {2774--2780},
  publisher    = {The American Chemical Society},
  series       = {Nano Letters},
  title        = {Wurtzite GaAs Quantum Wires : One-Dimensional Subband Formation},
  url          = {http://dx.doi.org/10.1021/acs.nanolett.6b00482},
  volume       = {16},
  year         = {2016},
}