Tight-binding theory of the electronic structures for rhombohedral semimetals

1993 ◽  
Vol 48 (23) ◽  
pp. 17271-17279 ◽  
Author(s):  
J. H. Xu ◽  
E. G. Wang ◽  
C. S. Ting ◽  
W. P. Su
Keyword(s):  
Electronic Structures ◽  
Tight Binding ◽  
Binding Theory

A Tight-Binding Theory of the Electronic Structures for Rhombohedral Semimetals and Sb/GaSb, Sb/AlSb Superlattices

1993 ◽  
Vol 325 ◽  
Author(s):  
J.H. Xu ◽  
E.G. Wang ◽  
C.S. Ting ◽  
W.P. Su
Keyword(s):  
Electronic Structures ◽  
Tight Binding ◽  
Interface State ◽  
Orbit Interaction ◽  
Spin Orbit ◽  
Tight Binding Model ◽  
Binding Theory ◽  
Binding Parameters ◽  
Binding Model ◽  
Group V

AbstractThe band structures of three group-V semimetals As, Sb, and Bi with rhombohedral A7 symmetry are studied using a second-neighbor tight-binding model including spin-orbit interaction with an sp3s* basis. Then the bulk tight-binding parameters are used to investigate the electronic properties of semimetal-semiconductor superlattices made of alternating (111) layers of Sb and GaSb or AlSb. It is found that the band gap can be adjustable depending primarily on the thickness of the Sb layers. An interface state is observed in the region of the gap.

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