Electron-hole bilayer quantum dots: phase diagram and exciton localization
(2004) In Solid State Communications 130(3-4). p.187-191- Abstract
- We studied a vertical 'quantum dot molecule', where one of the dots is occupied by electrons and the other by holes. We find that different phases occur in the ground state, depending on the carrier density and the interdot distance. When the system is dominated by shell structure, orbital degeneracies can be removed either by Hund's rule, or by Jahn-Teller deformation. Both mechanisms can lead to a maximum of the addition energy at mid-shell. At low densities and large interdot distances, bound electron-hole pairs are formed. (C) 2004 Elsevier Ltd. All rights reserved.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/282010
- author
- Karkkainen, K ; Koskinen, M ; Manninen, M and Reimann, Stephanie LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- quantum dot molecule, electron-hole plasma
- in
- Solid State Communications
- volume
- 130
- issue
- 3-4
- pages
- 187 - 191
- publisher
- Pergamon Press Ltd.
- external identifiers
-
- wos:000220538900008
- scopus:1642304824
- ISSN
- 1879-2766
- DOI
- 10.1016/j.ssc.2004.02.003
- 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
- a9ce0d4d-63b7-40ac-9299-4040cd5e4d33 (old id 282010)
- date added to LUP
- 2016-04-01 11:40:59
- date last changed
- 2022-01-26 08:39:22
@article{a9ce0d4d-63b7-40ac-9299-4040cd5e4d33, abstract = {{We studied a vertical 'quantum dot molecule', where one of the dots is occupied by electrons and the other by holes. We find that different phases occur in the ground state, depending on the carrier density and the interdot distance. When the system is dominated by shell structure, orbital degeneracies can be removed either by Hund's rule, or by Jahn-Teller deformation. Both mechanisms can lead to a maximum of the addition energy at mid-shell. At low densities and large interdot distances, bound electron-hole pairs are formed. (C) 2004 Elsevier Ltd. All rights reserved.}}, author = {{Karkkainen, K and Koskinen, M and Manninen, M and Reimann, Stephanie}}, issn = {{1879-2766}}, keywords = {{quantum dot molecule; electron-hole plasma}}, language = {{eng}}, number = {{3-4}}, pages = {{187--191}}, publisher = {{Pergamon Press Ltd.}}, series = {{Solid State Communications}}, title = {{Electron-hole bilayer quantum dots: phase diagram and exciton localization}}, url = {{http://dx.doi.org/10.1016/j.ssc.2004.02.003}}, doi = {{10.1016/j.ssc.2004.02.003}}, volume = {{130}}, year = {{2004}}, }