Abstract
The crystal structures of the Group VB to VIIB elements and of compounds formed between them are discussed on the basis of the valence-bond theory. A consistent bond scheme is proposed and applied to derive qualitative band structures for these materials. The band structures, which in many cases deviate from the usual semiconductor band model, afford a satisfactory interpretation of the anomalous electrical and optical properties observed in some of the substances under consideration. Thus, for instance, they provide an explanation of the anomalous sign reversals of the Hall coefficients observed in both tellurium and Bi 2Te 3. Semiconducting properties are predicted for a series of ternary compounds.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
