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arXiv · 1303.0911

Renormalization Group Approach to Anderson Impurity in the Bulk of Topological Insulators

Igor Kuzmenko·Yshai Avishai·Tai Kai Ng
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Abstract

It has been recently suggested that when an Anderson impurity is immersed in the bulk of a topological insulator, a Kondo resonant peak will appear simultaneously with an in-gap bound-state when the band-dispersion has an "inverted-Mexican-hat" form. The mid-gap bound-state generates another spin state and the Kondo effect is thereby screened. In this paper we study this problem within a weak-coupling RG scheme where we show that the system exhibits complex crossover behavior between different symmetry configurations and may evolve into a self-screened-Kondo or SO(3) low energy fix point. Experimental consequences of this scenario are pointed out.

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Igor Kuzmenko, Yshai Avishai, Tai Kai Ng. 2013-03-05. Renormalization Group Approach to Anderson Impurity in the Bulk of Topological Insulators. https://arxiv.org/abs/1303.0911

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