ELECTRONIC-PROPERTIES OF (ZNSE)(M)(CD(1)-X)ZN(X)SE)(N) SUPERLATTICES

Citation
Sf. Ren et al., ELECTRONIC-PROPERTIES OF (ZNSE)(M)(CD(1)-X)ZN(X)SE)(N) SUPERLATTICES, Physical review. B, Condensed matter, 49(11), 1994, pp. 7569-7572
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
01631829
Volume
49
Issue
11
Year of publication
1994
Pages
7569 - 7572
Database
ISI
SICI code
0163-1829(1994)49:11<7569:EO(S>2.0.ZU;2-J
Abstract
We present theoretical calculations on the electronic structures of (Z nSe)m(Cd1-xZnxSe)n superlattices. First-principle pseudopotential calc ulations are performed to obtain the valence-band offset for CdSe grow n on ZnSe. We then use an empirical nonlocal pseudopotential method, i ncluding the spin-orbit interaction to calculate the band structures a nd effective masses of (ZnSe)m(Cd1-xZnxSe)n superlattices grown on ZnS e. The empirical pseudopotentials are taken to be linear combinations of Gaussian functions with a few adjustable parameters. The parameters of ZnSe and CdSe are fitted to available experimental data. The effec ts of strain due to lattice mismatch have been properly taken into acc ount. We have also studied the band pp as a function of composition an d layer thicknesses of constituent materials in superlattices. The res ults are in agreement with recent experimental data.