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Description
  • We study the Josephson current 0-pi transition of a quantum dot tuned to the Kondo regime. The physics can be quantitatively captured by the numerically exact continuous time quantum Monte Carlo method applied to the single-impurity Anderson model with Bardeen-Cooper-Schrieffer superconducting leads. For a comparison to an experiment, the tunnel couplings are determined by fitting the normal-state linear conductance. Excellent agreement for the dependence of the critical Josephson current on the level energy is achieved. For increased tunnel couplings the Kondo scale becomes comparable to the superconducting gap, and the regime of the strongest competition between superconductivity and Kondo correlations is reached; we predict the gate voltage dependence of the critical current in this regime.
  • We study the Josephson current 0-pi transition of a quantum dot tuned to the Kondo regime. The physics can be quantitatively captured by the numerically exact continuous time quantum Monte Carlo method applied to the single-impurity Anderson model with Bardeen-Cooper-Schrieffer superconducting leads. For a comparison to an experiment, the tunnel couplings are determined by fitting the normal-state linear conductance. Excellent agreement for the dependence of the critical Josephson current on the level energy is achieved. For increased tunnel couplings the Kondo scale becomes comparable to the superconducting gap, and the regime of the strongest competition between superconductivity and Kondo correlations is reached; we predict the gate voltage dependence of the critical current in this regime. (en)
Title
  • Understanding the Josephson Current through a Kondo-Correlated Quantum Dot
  • Understanding the Josephson Current through a Kondo-Correlated Quantum Dot (en)
skos:prefLabel
  • Understanding the Josephson Current through a Kondo-Correlated Quantum Dot
  • Understanding the Josephson Current through a Kondo-Correlated Quantum Dot (en)
skos:notation
  • RIV/00216208:11320/12:10126501!RIV13-GA0-11320___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GCP204/11/J042)
http://linked.open...iv/cisloPeriodika
  • 22
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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  • 175945
http://linked.open...ai/riv/idVysledku
  • RIV/00216208:11320/12:10126501
http://linked.open...riv/jazykVysledku
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  • transition; superconductor; impurities; carbon nanotubes (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [DB7C0C4EF931]
http://linked.open...i/riv/nazevZdroje
  • Physical Review Letters
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
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http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 108
http://linked.open...iv/tvurceVysledku
  • Novotný, Tomáš
  • Assaad, F. F.
  • Karrasch, C.
  • Luitz, D. J.
  • Meden, V.
http://linked.open...ain/vavai/riv/wos
  • 000304655800011
issn
  • 0031-9007
number of pages
http://bibframe.org/vocab/doi
  • 10.1103/PhysRevLett.108.227001
http://localhost/t...ganizacniJednotka
  • 11320
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