Stability of vortex structures in quantum dots
(2005) In Physical Review B (Condensed Matter and Materials Physics) 71(3).- Abstract
- We study the stability and structure of vortices emerging in two-dimensional quantum dots in high magnetic fields. Our results obtained with exact diagonalization and density-functional calculations show that vortex structures can be found in various confining potentials. In nonsymmetric external potentials we find off-electron vortices that are localized giving rise to charge deficiency or holes in the electron density with rotating currents around them. We discuss the role of quantum fluctuations and show that vortex formation is observable in the energetics of the system. Our findings suggest that vortices can be used to characterize the solutions in high magnetic fields, giving insight into the underlying internal structure of the... (More)
- We study the stability and structure of vortices emerging in two-dimensional quantum dots in high magnetic fields. Our results obtained with exact diagonalization and density-functional calculations show that vortex structures can be found in various confining potentials. In nonsymmetric external potentials we find off-electron vortices that are localized giving rise to charge deficiency or holes in the electron density with rotating currents around them. We discuss the role of quantum fluctuations and show that vortex formation is observable in the energetics of the system. Our findings suggest that vortices can be used to characterize the solutions in high magnetic fields, giving insight into the underlying internal structure of the electronic wave function. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/254128
- author
- Saarikoski, H ; Reimann, Stephanie LU ; Rasanen, E ; Harju, A and Puska, M J
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 71
- issue
- 3
- publisher
- American Physical Society
- external identifiers
-
- wos:000226735900138
- scopus:15444379020
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.71.035421
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)
- id
- 8298a375-09f2-4fd5-8f4c-870bf8e7c536 (old id 254128)
- date added to LUP
- 2016-04-01 16:16:31
- date last changed
- 2022-04-15 03:21:24
@article{8298a375-09f2-4fd5-8f4c-870bf8e7c536,
abstract = {{We study the stability and structure of vortices emerging in two-dimensional quantum dots in high magnetic fields. Our results obtained with exact diagonalization and density-functional calculations show that vortex structures can be found in various confining potentials. In nonsymmetric external potentials we find off-electron vortices that are localized giving rise to charge deficiency or holes in the electron density with rotating currents around them. We discuss the role of quantum fluctuations and show that vortex formation is observable in the energetics of the system. Our findings suggest that vortices can be used to characterize the solutions in high magnetic fields, giving insight into the underlying internal structure of the electronic wave function.}},
author = {{Saarikoski, H and Reimann, Stephanie and Rasanen, E and Harju, A and Puska, M J}},
issn = {{1098-0121}},
language = {{eng}},
number = {{3}},
publisher = {{American Physical Society}},
series = {{Physical Review B (Condensed Matter and Materials Physics)}},
title = {{Stability of vortex structures in quantum dots}},
url = {{http://dx.doi.org/10.1103/PhysRevB.71.035421}},
doi = {{10.1103/PhysRevB.71.035421}},
volume = {{71}},
year = {{2005}},
}