Large-N limit of a magnetic impurity in unconventional density waves

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Abstract

We investigate the effect of unconventional density wave (UDW) condensate on an Anderson impurity using large-N technique at T=0. In accordance with previous treatments of a Kondo impurity in pseudogap phases, we find that Kondo effect occurs only in a certain range of parameters. The f-electron density of states reflects the influence of UDW at low energies and around the maximum of the density wave gap. The static spin susceptibility diverges at the critical coupling, indicating the transition from strong to weak coupling. In the dynamic spin susceptibility an additional peak appears showing the presence of the of UDW gap. Predictions concerning nonlinear density of states are made. Our results apply to other unconventional condensates such as d-wave superconductors and d-density waves as well.

Original languageEnglish
Article number075107
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number7
DOIs
Publication statusPublished - Feb 1 2005

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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