Supercurrent in nodal superconductors

In recent years, a number of nodal superconductors have been identified; d-wave superconductors
in high Tc cuprates, CeCoIn5, and -(ET)2Cu(NCS)2, 2D f-wave superconductor in Sr2RuO4 and
hybrid s+g-wave superconductor in YNi2B2C. In this work we conduct a theoretical study of nodal
superconductors in the presence of supercurrent. For simplicity, we limit ourselves to d-wave and
2D f-wave superconductors. We compute the quasiparticle density of states and the temperature
dependence of the depairing critical current in nodal superconductors, both of which are accessible
experimentally.

Igor Khavkine1, Hae-Young Kee1 and K. Maki2
1Department of Physics, University of Toronto, Toronto, Ontario M5S 1A7, Canada
2Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089-0484