Exact results for the Kondo screening cloud of two helical liquids

Thore Posske, Chao Xing Liu, Jan Carl Budich, Björn Trauzettel

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

We analyze the screening of a magnetic quantum dot with spin 12 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 μs. Such a spin voltage can be conveniently applied by a charge bias in a four-terminal helical liquid setup.

Original languageEnglish (US)
Article number016602
JournalPhysical Review Letters
Volume110
Issue number1
DOIs
StatePublished - Jan 2 2013

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screening
electric potential
liquids
quantum dots
oscillations
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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Posske, Thore ; Liu, Chao Xing ; Budich, Jan Carl ; Trauzettel, Björn. / Exact results for the Kondo screening cloud of two helical liquids. In: Physical Review Letters. 2013 ; Vol. 110, No. 1.
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Exact results for the Kondo screening cloud of two helical liquids. / Posske, Thore; Liu, Chao Xing; Budich, Jan Carl; Trauzettel, Björn.

In: Physical Review Letters, Vol. 110, No. 1, 016602, 02.01.2013.

Research output: Contribution to journalArticle

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