Coherent-potential approximation for liquid metals and amorphous solids. I. Tight-binding model

1975 ◽  
Vol 11 (12) ◽  
pp. 4746-4752 ◽  
Author(s):  
Fumiko Yonezawa ◽  
Mitsuo Watabe
Keyword(s):  
Liquid Metals ◽  
Tight Binding ◽  
Amorphous Solids ◽  
Coherent Potential Approximation ◽  
Tight Binding Model ◽  
Potential Approximation ◽  
Binding Model

Optical Properties of a Quantum Well of A1−x Bx Alloy Semiconductor in the Coherent Potential Approximation

2000 ◽  
Vol 639 ◽  
Author(s):  
Yuzo Shinozuka ◽  
Hirotsugu Kida ◽  
Masanori Watarikawa
Keyword(s):  
Optical Properties ◽  
Quantum Well ◽  
Tight Binding ◽  
Impurity Band ◽  
Coherent Potential Approximation ◽  
Electron Hole ◽  
Potential Approximation ◽  
Binding Model ◽  
Rectangular Array ◽  
One Dimensional

ABSTRACTWe have theoretically studied optical properties of a quantum well (QW) in which the well region is constructed from a binary alloy semiconductor A1−xBx in the coherent potential approximation (CPA). A tight binding model is used for a single particle (electron, hole, Frenkel exciton) in the well composed by a rectangular array of NxxNyxNz sites. The effect of the diagonal randomness is reduced to the coherent potential σ(E), which is assumed to be the same for all sites, and is selfconsistently determined with the average Green's function. For a slab (∞, ∞, Nz) and wire (∞, Ny, Nz), the density of states (E) is composed of Nz (or NyxNz) subbands, each shows the two (one)-dimensional van-Hove singularity. When x (or 1−x) is small, a B (A) impurity-band always appears at the lower (higher) energy side of the lowest (highest) host-band. The change of (E) and the absorption spectrum by changing the well-width and the dimensionality is discussed in detail.

Liquid metals and alloys in the tight-binding model

1973 ◽  
Vol 45 (4) ◽  
pp. 291-292 ◽  
Author(s):  
B. Movaghar ◽  
D.E. Miller ◽  
K.H. Bennemann
Keyword(s):  
Liquid Metals ◽  
Tight Binding ◽  
Metals And Alloys ◽  
Tight Binding Model ◽  
Binding Model

scholarly journals Optoelectronic properties of one-dimensional molecular chains simulated by a tight-binding model

AIP Advances ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 015127
Author(s):  
Qiuyuan Chen ◽  
Jiawei Chang ◽  
Lin Ma ◽  
Chenghan Li ◽  
Liangfei Duan ◽  
...  
Keyword(s):  
Tight Binding ◽  
Optoelectronic Properties ◽  
Tight Binding Model ◽  
Binding Model ◽  
One Dimensional
Sign in / Sign up

Export Citation Format

Share Document