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
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".