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

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

2004-07-15

arxiv.org/abs/cond-mat/0407387v1

Phys. Rev. B 71, 075107 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 7 figures

Scientific paper

10.1103/PhysRevB.71.075107

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 the UDW gap. Predictions concerning non-linear density of states are made. Our results apply to other unconventional condensates such as d-wave superconductors and d-density waves as well.

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