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Kondo effect in a one dimensional d-wave superconductor

Karyn Le Hur
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Abstract

We derive a solvable resonant-level type model, to describe an impurity spin coupled to zero-energy bound states localized at the edge of a one dimensional d-wave superconductor. This results in a two-channel Kondo effect with a quite unusual low-temperature thermodynamics. For instance, the local impurity susceptibility yields a finite maximum at zero temperature (but no logarithmic-divergence) due to the splitting of the impurity in two Majorana fermions. Moreover, we make comparisons with the Kondo effect occurring in a two dimensional d-wave superconductor.

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Karyn Le Hur. 2000-02-28. Kondo effect in a one dimensional d-wave superconductor. https://doi.org/10.1209/epl%2Fi2000-00217-9

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