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Exact Results for the Kondo Screening Cloud of Two Helical Liquids
Stockholm University, Faculty of Science, Department of Physics.
2013 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 110, no 1, 016602- p.Article in journal (Refereed) Published
Abstract [en]

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

Place, publisher, year, edition, pages
2013. Vol. 110, no 1, 016602- p.
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-87688DOI: 10.1103/PhysRevLett.110.016602ISI: 000313006100039OAI: diva2:605871


Available from: 2013-02-15 Created: 2013-02-14 Last updated: 2013-02-15Bibliographically approved

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Budich, Jan Carl
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