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A theory for anomalous enhancement of NMR relaxation rate $1/T_{1}T$ of$^{125}$Te toward zero temperature observed in Pb$_{1-x}$Tl$_{x}$Te ($x$=0.01)is presented on the idea of the charge Kondo effect of valence skipping elementTl. It is found that such enhancement in $1/T_{1}T$ is caused throughenhancement of the pair-hopping and inter-orbital interactions between 6selectrons localized on Tl site and conduction electrons doped in the hole bandthe semiconductor PbTe, which is the heart of the charge Kondo effect. It isalso found that the Knight shift is not influenced in the temperature regionwhere the relaxation rate is enhanced which is consistent with the experimentalobservation showing that the Korringa relation is apparently broken.

Theory for Anomalous NMR Response in Pb_{1-x}Tl_{x}Te on Charge Kondo Effect