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Anisotropic Pauli Spin-Blockade Effect and Spin-Orbit Interaction Field in an InAs Nanowire Double Quantum Dot

Wang, Ji Yin ; Huang, Guang Yao ; Huang, Shaoyun ; Xue, Jianhong ; Pan, Dong ; Zhao, Jianhua and Xu, Hongqi LU (2018) In Nano Letters 18(8). p.4741-4747
Abstract

We report on experimental detection of the spin-orbit interaction field in an InAs nanowire double quantum dot device. In the spin blockade regime, leakage current through the double quantum dot is measured and is used to extract the effects of spin-orbit interaction and hyperfine interaction on spin state mixing. At finite magnetic fields, the leakage current arising from the hyperfine interaction can be suppressed, and the spin-orbit interaction dominates spin state mixing. We observe dependence of the leakage current on the applied magnetic field direction and determine the direction of the spin-orbit interaction field. We show that the spin-orbit field lies in a direction perpendicular to the nanowire axis but with a pronounced... (More)

We report on experimental detection of the spin-orbit interaction field in an InAs nanowire double quantum dot device. In the spin blockade regime, leakage current through the double quantum dot is measured and is used to extract the effects of spin-orbit interaction and hyperfine interaction on spin state mixing. At finite magnetic fields, the leakage current arising from the hyperfine interaction can be suppressed, and the spin-orbit interaction dominates spin state mixing. We observe dependence of the leakage current on the applied magnetic field direction and determine the direction of the spin-orbit interaction field. We show that the spin-orbit field lies in a direction perpendicular to the nanowire axis but with a pronounced off-substrate-plane angle. The results are expected to have an important implication in employing InAs nanowires to construct spin-orbit qubits and topological quantum devices.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
double quantum dot, InAs nanowire, spin blockade, spin-orbit interaction
in
Nano Letters
volume
18
issue
8
pages
7 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85049864642
  • pmid:29987931
ISSN
1530-6984
DOI
10.1021/acs.nanolett.8b01153
language
English
LU publication?
yes
id
70212511-87e0-4d32-b970-3f5bb7d7edfb
date added to LUP
2022-03-29 14:28:44
date last changed
2024-04-10 10:11:31
@article{70212511-87e0-4d32-b970-3f5bb7d7edfb,
  abstract     = {{<p>We report on experimental detection of the spin-orbit interaction field in an InAs nanowire double quantum dot device. In the spin blockade regime, leakage current through the double quantum dot is measured and is used to extract the effects of spin-orbit interaction and hyperfine interaction on spin state mixing. At finite magnetic fields, the leakage current arising from the hyperfine interaction can be suppressed, and the spin-orbit interaction dominates spin state mixing. We observe dependence of the leakage current on the applied magnetic field direction and determine the direction of the spin-orbit interaction field. We show that the spin-orbit field lies in a direction perpendicular to the nanowire axis but with a pronounced off-substrate-plane angle. The results are expected to have an important implication in employing InAs nanowires to construct spin-orbit qubits and topological quantum devices.</p>}},
  author       = {{Wang, Ji Yin and Huang, Guang Yao and Huang, Shaoyun and Xue, Jianhong and Pan, Dong and Zhao, Jianhua and Xu, Hongqi}},
  issn         = {{1530-6984}},
  keywords     = {{double quantum dot; InAs nanowire; spin blockade; spin-orbit interaction}},
  language     = {{eng}},
  number       = {{8}},
  pages        = {{4741--4747}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Nano Letters}},
  title        = {{Anisotropic Pauli Spin-Blockade Effect and Spin-Orbit Interaction Field in an InAs Nanowire Double Quantum Dot}},
  url          = {{http://dx.doi.org/10.1021/acs.nanolett.8b01153}},
  doi          = {{10.1021/acs.nanolett.8b01153}},
  volume       = {{18}},
  year         = {{2018}},
}