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- W1994686333 abstract "The authors derive a theory for the Knight shift in narrow-gap semiconductors from a general expression for the Knight shift in solids, which includes spin-orbit and many-body effects from first principles. As an example, they have applied the theory to evaluate the temperature variation of the Knight shift of 207Pb in PbTe. The effects of temperature have been incorporated in their calculation through a change in the energy gap and through the Fermi distribution function and its derivative, which appear in the different contributions to the Knight shift. They formulate a k. pi band calculation in which the interaction of the band-edge states is considered exactly and the resulting states are treated with the far bands by using second-order perturbation theory. The results for two typical values of hole densities in p-PbTe show fairly good agreement with experiment. They emphasis that the general nature of the calculations can be used to calculate the quantity in other narrow-gap semiconductors such as PbS and PbSe." @default.
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- W1994686333 date "1987-01-20" @default.
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- W1994686333 title "Theory of the Knight shift in narrow-gap semiconductor" @default.
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- W1994686333 doi "https://doi.org/10.1088/0022-3719/20/2/010" @default.
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