Year: 2000
Type: article
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 ln-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.
Source: Europhysics Letters (EPL)
Author: K. Le Hur
Institution: ETH Zurich
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2136459704