Ls. Borkowski et Pj. Hirschfeld, LOW-TEMPERATURE PROPERTIES OF ANISOTROPIC SUPERCONDUCTORS WITH KONDO IMPURITIES, Journal of low temperature physics, 96(3-4), 1994, pp. 185-206
We present a self-consistent theory of superconductors in the presence
of Kondo impurities, using large-N slave-boson methods to treat the i
mpurity dynamics. The technique is tested on the s-wave case and shown
to give good results compared to other methods for T(K) > T(c). We ca
lculate low temperature thermodynamic and transport properties for var
ious superconducting states, including isotropic s-wave and representa
tive anisotropic model states with line and point nodes on the Fermi s
urface.