Shallow impurities in V-groove quantum wires - art. no. 113307

Citation
G. Weber et Am. De Paula, Shallow impurities in V-groove quantum wires - art. no. 113307, PHYS REV B, 6311(11), 2001, pp. 3307
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
0163-1829 → ACNP
Volume
6311
Issue
11
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010315)6311:11<3307:SIIVQW>2.0.ZU;2-X
Abstract
We calculate the binding energies for shallow impurities in V-groove GaAs/A lxGa1-xAs quantum wires using a variational technique. The carrier ground s tates are calculated by an effective potential method together with a suita ble coordinate transformation that allows the decoupling of the two-dimensi onal wave function. This method enables a detailed calculation of binding e nergies, providing an efficient tool for the study of impurity-related prop erties in V-groove wires. We Show that the lateral confinement of the V-gro ove potential localizes the impurity wave function very effectively in the central region of the quantum wire.