Interband Effects in the Coherent Potential Approximation: Simple Two Band Model

1975 ◽  
Vol 53 (11) ◽  
pp. 1109-1113
Author(s):  
M. L. Glasser ◽  
P. R. Sievert

The CPA is applied to a two band separable pseudopotential model for a hot binary liquid alloy. The variation of the band gap with concentration is strictly linear, but the band broadening is found to be asymmetric about C = 50% and to depend in a complicated way on interband interaction.

1983 ◽  
Vol 28 (10) ◽  
pp. 5583-5598 ◽  
Author(s):  
M. Soltwisch ◽  
D. Quitmann ◽  
H. Ruppersberg ◽  
J. B. Suck

1996 ◽  
Vol 10 (07) ◽  
pp. 287-292
Author(s):  
IGOR N. KARNAUKHOV

We present a two-band model of the gas of fermions consisting of a parabolic band of conduction electrons and a band of local pairs interacting via a δ-function interband interaction. The model is integrable and its solution has been obtained by means of the Bethe ansatz. The ground state energy and the density of conduction electrons have been calculated numerically.


1980 ◽  
Vol 9 (5) ◽  
pp. 553-556 ◽  
Author(s):  
Kazuaki Honda ◽  
Katsumi Takahashi ◽  
Yoshisada Ogino

1960 ◽  
Vol 33 (10) ◽  
pp. 1345-1349 ◽  
Author(s):  
Kichizo Niwa ◽  
Toshio Yokokawa ◽  
Harue Wada

2020 ◽  
Vol 6 (2) ◽  
pp. 20-25
Author(s):  
N. Panthi ◽  
I. B. Bhandari ◽  
R. C. Pangeni ◽  
I. Koirala

Theoretical study of thermodynamic properties of binary liquid Potassium-Thallium alloy at temperatures 798 K, 1000 K, 1200 K and 1400 K have been analyzed as a function of concentration by considering temperature dependent exponential interaction parameters in the framework of R-K polynomials. The viscosity and surface tension of the alloy have been studied by BBK model and improved derivation of Butler equation respectively. The study provides the information of moderately interacting as well as segregating nature at the low concentration of Thallium and ordering nature at high concentration of Thallium and the viscosity and surface tension of the alloy decrease with increase in temperature.


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