Numéro
J. Phys. Colloques
Volume 42, Numéro C4, Octobre 1981
Proceedings of the Ninth International Conference on Amorphous and Liquid Semiconductors
Page(s) C4-51 - C4-54
DOI https://doi.org/10.1051/jphyscol:1981407
Proceedings of the Ninth International Conference on Amorphous and Liquid Semiconductors

J. Phys. Colloques 42 (1981) C4-51-C4-54

DOI: 10.1051/jphyscol:1981407

ANDERSON LOCALISATION IN TWO-BAND SYSTEMS

H. Aoki

Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, England


Abstract
The electronic structure of disordered two-band systems is investigated systematically for the first time to shed light on the nature of localisation in realistic systems. Characteristic localisation in the models including intrinsic semiconductor and hybridised s-d systems is studied by both the direct diagonalisation of the Hamiltonian and the decimation method. We stressed the importance of the inter-band mixing, which produces intrinsic features in the electronic structure arising from interplay of randomness and basic electronic structure.