Journal
PHYSICAL REVIEW B
Volume 81, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.235411
Keywords
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Funding
- HK-SAR
- RGC
- NSFC [10974086, 10734120]
- Ministry of Science and Technology of China [2006CB921802]
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We use a trial wave function to study the spin-1/2 Kondo effect of a helical metal on the surface of a three-dimensional topological insulator. While the impurity spin is quenched by conduction electrons, the spin-spin correlation of the conduction electron and impurity is strongly anisotropic in both spin and spatial spaces. As a result of strong spin-orbit coupling, the out-of-plane component of the impurity spin is found to be fully screened by the orbital angular momentum of the conduction electrons.
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