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Isomeric electronic states in concentric quantum rings

Maria Escartin, Jose ; Malet, Francesc LU ; Emperador, Agusti and Marti, Pi (2009) In Physical Review B (Condensed Matter and Materials Physics) 79(24).
Abstract
We show that polarized few-electron concentric double quantum rings display localized states that are the quantum analog of classical equilibrium ones. These states have very similar energies but fairly different angular momenta, constituting a new physical realization of the isomeric states found in nuclear and molecular physics. Their fingerprint is a very soft mode in the infrared-absorption spectrum at nearly the dipole excitation energy of a rigidly rotating N-electron molecule. The yrast line and the infrared-absorption spectrum are discussed for N=4 and 6 electron configurations.
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
infrared spectra, localised states, quantum dots
in
Physical Review B (Condensed Matter and Materials Physics)
volume
79
issue
24
publisher
American Physical Society
external identifiers
  • wos:000267699700093
  • scopus:67650142084
ISSN
1098-0121
DOI
10.1103/PhysRevB.79.245317
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), Applied Nutrition and Food Chemistry (011001300)
id
350aa858-b708-47f7-a1df-95937151d9a8 (old id 1462366)
date added to LUP
2016-04-01 13:24:29
date last changed
2025-10-14 09:52:55
@article{350aa858-b708-47f7-a1df-95937151d9a8,
  abstract     = {{We show that polarized few-electron concentric double quantum rings display localized states that are the quantum analog of classical equilibrium ones. These states have very similar energies but fairly different angular momenta, constituting a new physical realization of the isomeric states found in nuclear and molecular physics. Their fingerprint is a very soft mode in the infrared-absorption spectrum at nearly the dipole excitation energy of a rigidly rotating N-electron molecule. The yrast line and the infrared-absorption spectrum are discussed for N=4 and 6 electron configurations.}},
  author       = {{Maria Escartin, Jose and Malet, Francesc and Emperador, Agusti and Marti, Pi}},
  issn         = {{1098-0121}},
  keywords     = {{infrared spectra; localised states; quantum dots}},
  language     = {{eng}},
  number       = {{24}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review B (Condensed Matter and Materials Physics)}},
  title        = {{Isomeric electronic states in concentric quantum rings}},
  url          = {{http://dx.doi.org/10.1103/PhysRevB.79.245317}},
  doi          = {{10.1103/PhysRevB.79.245317}},
  volume       = {{79}},
  year         = {{2009}},
}