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Magnetic Susceptibility Of Nickel., Arun Kumar Chatterjee

LSU Historical Dissertations and Theses

Using density and functional theory, expressions for the longitudinal and transverse spin susceptibility of ferromagnetic metals have been derived in the local density approximation. The self consistent calculation of these susceptibilities necessitates the inversion of some infinite dimensional matrices, which have been done analytically using tight binding wave function for the 3d electrons. This amounted to a transformation from a Fourier representation to an orbital representation. This method is then applied for nickel using a semi-empirical band structure. In the light of these approximations it proved worthwhile to introduce some adjustable parameters to describe the electron interactions. In the transverse …