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Giant vortices in rotating electron droplets

Räsänen, Esa; Saarikoski, Henri; Yu, Yongle LU ; Harju, Ari; Puska, Martti and Reimann, Stephanie LU (2006) In Physical Review B. Condensed Matter and Materials Physics 73(23). p.235324-235330
Abstract
We predict the formation of giant vortices in quasi-two-dimensional quantum dots at high magnetic fields, i.e., in rapidly rotating electron droplets. Our numerical results for quantum dots confined by a flat, anharmonic potential show ground states where vortices are accumulated in the center of the dot, thereby leading to large cores in the electron and current densities. The phenomenon is analogous to what was recently found in rotating Bose-Einstein condensates. The giant-vortex states leave measurable signatures in the ground-state energetics. The conditions for the giant-vortex formation as well as the internal structure of the vortex cores are discussed.
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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
73
issue
23
pages
235324 - 235330
publisher
American Physical Society
external identifiers
  • wos:000238696600092
  • scopus:33745088329
DOI
10.1103/PhysRevB.73.235324
language
English
LU publication?
yes
id
49d379a8-1566-4309-a265-c425825a7051 (old id 837839)
date added to LUP
2008-01-08 11:53:40
date last changed
2017-01-01 08:03:18
@article{49d379a8-1566-4309-a265-c425825a7051,
  abstract     = {We predict the formation of giant vortices in quasi-two-dimensional quantum dots at high magnetic fields, i.e., in rapidly rotating electron droplets. Our numerical results for quantum dots confined by a flat, anharmonic potential show ground states where vortices are accumulated in the center of the dot, thereby leading to large cores in the electron and current densities. The phenomenon is analogous to what was recently found in rotating Bose-Einstein condensates. The giant-vortex states leave measurable signatures in the ground-state energetics. The conditions for the giant-vortex formation as well as the internal structure of the vortex cores are discussed.},
  author       = {Räsänen, Esa and Saarikoski, Henri and Yu, Yongle and Harju, Ari and Puska, Martti and Reimann, Stephanie},
  language     = {eng},
  number       = {23},
  pages        = {235324--235330},
  publisher    = {American Physical Society},
  series       = {Physical Review B. Condensed Matter and Materials Physics},
  title        = {Giant vortices in rotating electron droplets},
  url          = {http://dx.doi.org/10.1103/PhysRevB.73.235324},
  volume       = {73},
  year         = {2006},
}