Magnetic impurities in Kondo insulators: An application to samarium hexaboride

@article{Fuhrman2020MagneticII,
  title={Magnetic impurities in Kondo insulators: An application to samarium hexaboride},
  author={Wesley T. Fuhrman and P. Nikoli'c},
  journal={Physical Review B},
  year={2020}
}
Impurities and defects in Kondo insulators can have an unusual impact on dynamics that blends with effects of intrinsic electron correlations. Such crystal imperfections are difficult to avoid, and their consequences are incompletely understood. Here we study magnetic impurities in Kondo insulators via perturbation theory of the s-d Kondo impurity model adapted to small bandgap insulators. The calculated magnetization and specific heat agree with recent thermodynamic measurements in samarium… Expand
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