Journal
PHYSICAL REVIEW LETTERS
Volume 110, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.016602
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- DFG
- Humboldt Foundation
- ESF
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We analyze the screening of a magnetic quantum dot with spin 1/2 coupled to two helical liquids. Interestingly, we find two qualitatively different sets of Toulouse points, i.e., nontrivial parameters for which we can solve the two channel Kondo model exactly. This enables us to calculate the temperature and voltage dependent Kondo screening cloud, which develops oscillations for an applied spin voltage mu(s). Such a spin voltage can be conveniently applied by a charge bias in a four-terminal helical liquid setup. DOI: 10.1103/PhysRevLett.110.016602
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