An Evaluation of Temperature Dependence Spin Susceptibility of Normal 3_He Liquid at Almost Localized Fermion Model

Abstract

Using almost localised fermion model we have evaluated the value of spin susceptibilities (X/) as a function of T for liquid for T below 2.5 K, for fixed values of P(0) = 0, 15 and 30 bar. Earlier we have studied the temperature dependence , (), (), [P-P(0)] of liquid below 2.5 K using almost localized model. The physical basis of this model is the assumption that is a liquid close to localization or solidification. It is identical to nearly solid structure for the strongly spin - polarized state of . In the picture of almost localized fermions, the entropy is bounded by R In 2 only for temperature < T < U. U is the effective short range interaction. Because in this temperature range only singly occupied lattice sites exist. The behaviour for T > is not simply that of free fermions. The singlet or density existations have a characteristic energy U and while the coherent Fermi liquid properties are lost on a scale of free fermion behaviour is not recovered so long as T < U. There are thus two quite different characteristic temperature scales in Our theoretically evaluated result are in good agreement with the experimental data.