The departure of the g factor from the free-spin value due to spin-orbit interaction is calculated for conduction electrons in a nondegenerate band. The Kohn-Luttinger representation is used and the result is obtained to second order in the wave-vector of the electron at the Fermi surface. The result is expressed in two forms, one of these being a sum of volume and surface integrals over the unit cell. The orders of magnitude of these are discussed but no numerical calculations are made.
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Y. Yafet (1957) studied this question.
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