Do quantum dots allow one access to pseudogap Kondo physics?

  • Hopkinson J
  • Le Hur K
  • Dupont É
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Abstract

For the last decade (Phys. World 14 (1) (2001) 33), tunable quantum dot systems have allowed the investigation of Kondo physics wherein the quenching of a single spin on an artificial atom affects the conductance. The pseudogap Kondo model (pKm) featuring a density of states ρ(ε)=C|ε|r, introduced by Withoff and Fradkin (Phys. Rev. Lett. 64 (1990) 1835) in 1990 was predicted to exhibit Kondo-like physics above a critical value of the Kondo coupling, Jc, which several groups have shown by numerical renormalization group (RG) is finite for r

Author-supplied keywords

  • Pseudogap Kondo model
  • Quantum critical point
  • Quantum dots

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Authors

  • John Hopkinson

  • Karyn Le Hur

  • Émilie Dupont

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