Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Field-orientation dependence of the Zeeman spin splitting in (In,Ga)As quantum point contacts

Martin, T. P. ; Szorkovszky, A. ; Micolich, A. P. ; Hamilton, A. R. ; Marlow, C. A. ; Taylor, R. P. ; Linke, Heiner LU orcid and Xu, Hongqi LU (2010) In Physical Review B (Condensed Matter and Materials Physics) 81(4).
Abstract
We study the Zeeman spin splitting in a quantum point contact (QPC) etched into an InGaAs/InP heterostructure for three orthogonal magnetic field orientations with respect to the QPC. For the two in-plane orientations we observe an isotropic Zeeman spin splitting, which becomes stronger as the system is made more one dimensional. The Lande g factor is enhanced by up to a factor of two compared to two-dimensional electron systems in InGaAs/InP. A much larger Zeeman splitting is observed when the field is oriented perpendicular to the heterostructure, resulting in a g factor of 15.7 in the one-dimensional limit.
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
81
issue
4
article number
041303
publisher
American Physical Society
external identifiers
  • wos:000274002500009
  • scopus:77954829460
ISSN
1098-0121
DOI
10.1103/PhysRevB.81.041303
language
English
LU publication?
yes
id
d2f338ff-ad30-484d-bf89-3033cd11fb71 (old id 1546899)
date added to LUP
2016-04-01 13:50:28
date last changed
2023-11-12 22:44:41
@article{d2f338ff-ad30-484d-bf89-3033cd11fb71,
  abstract     = {{We study the Zeeman spin splitting in a quantum point contact (QPC) etched into an InGaAs/InP heterostructure for three orthogonal magnetic field orientations with respect to the QPC. For the two in-plane orientations we observe an isotropic Zeeman spin splitting, which becomes stronger as the system is made more one dimensional. The Lande g factor is enhanced by up to a factor of two compared to two-dimensional electron systems in InGaAs/InP. A much larger Zeeman splitting is observed when the field is oriented perpendicular to the heterostructure, resulting in a g factor of 15.7 in the one-dimensional limit.}},
  author       = {{Martin, T. P. and Szorkovszky, A. and Micolich, A. P. and Hamilton, A. R. and Marlow, C. A. and Taylor, R. P. and Linke, Heiner and Xu, Hongqi}},
  issn         = {{1098-0121}},
  language     = {{eng}},
  number       = {{4}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review B (Condensed Matter and Materials Physics)}},
  title        = {{Field-orientation dependence of the Zeeman spin splitting in (In,Ga)As quantum point contacts}},
  url          = {{http://dx.doi.org/10.1103/PhysRevB.81.041303}},
  doi          = {{10.1103/PhysRevB.81.041303}},
  volume       = {{81}},
  year         = {{2010}},
}