Noninteracting-spin band model for dielectric screening and local field corrections in ferromagnetic nickel

1975 ◽  
Vol 12 (3) ◽  
pp. 1076-1083 ◽  
Author(s):  
Natthi Singh ◽  
Joginder Singh ◽  
Satya Prakash
Keyword(s):  
Local Field ◽  
Band Model ◽  
Dielectric Screening

Static Local Field Factor for Dielectric Screening Function of Electron Gas at Metallic and Lower Densities

1998 ◽  
Vol 12 (16) ◽  
pp. 639-648 ◽  
Author(s):  
A. Sarkar ◽  
D. Sen ◽  
S. Haldar ◽  
D. Roy
Keyword(s):  
Local Field ◽  
Correlation Energy ◽  
Electron Gas ◽  
Present Formulation ◽  
Consistent Theory ◽  
Long Wavelength ◽  
Electron Correlation Energy ◽  
Dielectric Screening ◽  
Reasonable Prediction ◽  
Local Field Factor

A simple parametric form for the static local field factor G(q) which appears in the dielectric screening theory of an electron gas is proposed. A very accurate fit of Ceperley–Alder data of electron correlation energy in the entire density range using Levin–Weniger interpolant is obtained and used for the calculation of G(q). Both the short- and long- wavelength limits of G(q) are satis ed exactly in the present formulation which ensures fulfilment of a number of other legitimate criteria and produces some interesting results. A comparative study of the various static local eld factors derived so far vis-a-vis the present work is made. Even within the approximations of a static self-consistent theory, reasonable prediction regarding Wigner Crystallization is obtained in the present work.

SHEAR BAND OBSERVATIONS AND DERIVATIONS OF REQUIREMENTS FOR A SHEAR BAND MODEL

1985 ◽  
Vol 46 (C5) ◽  
pp. C5-273-C5-282
Author(s):  
L. Seaman ◽  
D. R. Curran ◽  
D. C. Erlich ◽  
T. Cooper ◽  
O. Dullum
Keyword(s):  
Shear Band ◽  
Band Model
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