A phenomenological parameter characterizing the relaxation of stresses caused by the lattice mismatch at a heteroboundary

Authors
Konstantinov, OV Kotel'nikov, EY Matveentsev, AV Romanov, AE
Citation
Ov. Konstantinov et al., A phenomenological parameter characterizing the relaxation of stresses caused by the lattice mismatch at a heteroboundary, TECH PHYS L, 27(8), 2001, pp. 683-685
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
TECHNICAL PHYSICS LETTERS
ISSN journal
10637850 → ACNP
Volume
27
Issue
8
Year of publication
2001
Pages
683 - 685
Database
ISI
SICI code
1063-7850(2001)27:8<683:APPCTR>2.0.ZU;2-N
Abstract
An analytical formula is derived describing an increase in the bandgap widt h for a quantum cluster considered as an inclusion of the simplest shape (s pherical or flat) featuring an arbitrary lattice mismatch with the surround ing matrix. A phenomenological relationship is introduced between this quan tity and the stressed boundary relaxation parameter considered as the fitti ng parameter. The relaxation is small (or even absent) in a system with qua ntum wells and is completely manifested in a system with quantum dots. (C) 2001 MAIK "Nauka/Interperiodica".