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Signatures of Wigner localization in epitaxially grown nanowires

Kristinsdottir, Liney Halla LU ; Cremon, Jonas LU ; Nilsson, Henrik LU ; Xu, Hongqi LU ; Samuelson, Lars LU ; Linke, Heiner LU ; Wacker, Andreas LU and Reimann, Stephanie LU (2011) In Physical Review B (Condensed Matter and Materials Physics) 83(4).
Abstract
It was predicted by Wigner in 1934 that an electron gas will undergo a transition to a crystallized state when its density is very low. Whereas significant progress has been made toward the detection of electronic Wigner states, their clear and direct experimental verification still remains a challenge. Here we address signatures of Wigner molecule formation in the transport properties of InSb nanowire quantum-dot systems, where a few electrons may form localized states depending on the size of the dot (i.e., the electron density). Using a configuration interaction approach combined with an appropriate transport formalism, we are able to predict the transport properties of these systems, in excellent agreement with experimental data. We... (More)
It was predicted by Wigner in 1934 that an electron gas will undergo a transition to a crystallized state when its density is very low. Whereas significant progress has been made toward the detection of electronic Wigner states, their clear and direct experimental verification still remains a challenge. Here we address signatures of Wigner molecule formation in the transport properties of InSb nanowire quantum-dot systems, where a few electrons may form localized states depending on the size of the dot (i.e., the electron density). Using a configuration interaction approach combined with an appropriate transport formalism, we are able to predict the transport properties of these systems, in excellent agreement with experimental data. We identify specific signatures of Wigner state formation, such as the strong suppression of the antiferromagnetic coupling, and are able to detect the onset of Wigner localization, both experimentally and theoretically, by studying different dot sizes. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
83
issue
4
publisher
American Physical Society
external identifiers
  • wos:000286768900001
  • scopus:79551653871
ISSN
1098-0121
DOI
10.1103/PhysRevB.83.041101
language
English
LU publication?
yes
id
99f99fed-fdc0-4e77-9b86-2ec25cf2f966 (old id 1877877)
date added to LUP
2011-04-27 09:59:03
date last changed
2017-03-19 03:46:19
@article{99f99fed-fdc0-4e77-9b86-2ec25cf2f966,
  abstract     = {It was predicted by Wigner in 1934 that an electron gas will undergo a transition to a crystallized state when its density is very low. Whereas significant progress has been made toward the detection of electronic Wigner states, their clear and direct experimental verification still remains a challenge. Here we address signatures of Wigner molecule formation in the transport properties of InSb nanowire quantum-dot systems, where a few electrons may form localized states depending on the size of the dot (i.e., the electron density). Using a configuration interaction approach combined with an appropriate transport formalism, we are able to predict the transport properties of these systems, in excellent agreement with experimental data. We identify specific signatures of Wigner state formation, such as the strong suppression of the antiferromagnetic coupling, and are able to detect the onset of Wigner localization, both experimentally and theoretically, by studying different dot sizes.},
  articleno    = {041101},
  author       = {Kristinsdottir, Liney Halla and Cremon, Jonas and Nilsson, Henrik and Xu, Hongqi and Samuelson, Lars and Linke, Heiner and Wacker, Andreas and Reimann, Stephanie},
  issn         = {1098-0121},
  language     = {eng},
  number       = {4},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Signatures of Wigner localization in epitaxially grown nanowires},
  url          = {http://dx.doi.org/10.1103/PhysRevB.83.041101},
  volume       = {83},
  year         = {2011},
}