Electronic Resource
Springer
Hyperfine interactions
60 (1990), S. 619-622
ISSN:
1572-9540
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The importance of various contributing mechanisms to the Knight shift (K) in PbTe and Pb1−xSnxTe is analyzed using a $$\overrightarrow k .\overrightarrow \pi $$ perturbation theory and a general experession for K which includes the spin (Ks), orbital (Ko) and spin-orbit (Kso) contributions to the Knight shift. It is found that Ks is the dominant contribution. However, with increase in the carrier concentration, the strength of Kso increases, and becomes of the same order as Ks at high density of carriers. Ko is found to be small throughout the range of the carrier density considered. Further, it is seen that the electron-electron exchange enhancement parameter increases with increase in the carrier density. We have also considered the effect of temperature. The results and the trends obtained in our calculation are in overall agreement with the experiment for the range of the carrier density considered.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02399829
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