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Probing Confined Phonon Modes by Transport through a Nanowire Double Quantum Dot

Weber, Carsten LU ; Fuhrer, Andreas LU ; Fasth, Carina LU ; Lindwall, Greta; Samuelson, Lars LU and Wacker, Andreas LU (2010) In Physical Review Letters 104(3). p.1-036801
Abstract
Strong radial confinement in semiconductor nanowires leads to modified electronic and phononic energy spectra. We analyze the current response to the interplay between quantum confinement effects of the electron and phonon systems in a gate-defined double quantum dot in a semiconductor nanowire. We show that current spectroscopy of inelastic transitions between the two quantum dots can be used as an experimental probe of the confined phonon environment. The resulting discrete peak structure in the measurements is explained by theoretical modeling of the confined phonon mode spectrum, where the piezoelectric coupling is of crucial importance.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
104
issue
3
pages
1 - 036801
publisher
American Physical Society
external identifiers
  • wos:000274003100035
  • scopus:74549191519
ISSN
1079-7114
DOI
10.1103/PhysRevLett.104.036801
language
English
LU publication?
yes
id
9a762607-a2c0-49d3-9680-209648f527f5 (old id 1546856)
date added to LUP
2010-02-25 11:48:20
date last changed
2018-06-24 03:02:09
@article{9a762607-a2c0-49d3-9680-209648f527f5,
  abstract     = {Strong radial confinement in semiconductor nanowires leads to modified electronic and phononic energy spectra. We analyze the current response to the interplay between quantum confinement effects of the electron and phonon systems in a gate-defined double quantum dot in a semiconductor nanowire. We show that current spectroscopy of inelastic transitions between the two quantum dots can be used as an experimental probe of the confined phonon environment. The resulting discrete peak structure in the measurements is explained by theoretical modeling of the confined phonon mode spectrum, where the piezoelectric coupling is of crucial importance.},
  author       = {Weber, Carsten and Fuhrer, Andreas and Fasth, Carina and Lindwall, Greta and Samuelson, Lars and Wacker, Andreas},
  issn         = {1079-7114},
  language     = {eng},
  number       = {3},
  pages        = {1--036801},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Probing Confined Phonon Modes by Transport through a Nanowire Double Quantum Dot},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.104.036801},
  volume       = {104},
  year         = {2010},
}