Abstract
Using Majorana fermions to represent spins we reexamine the Kondo lattice model for heavy fermions. The simplest decoupling procedure provides a realization of odd-frequency superconductivity, with resonant pairing and surfaces of gap zeros. Spin and charge coherence factors vanish linearly with the energy on the Fermi surface, predicting a linear specific heat, but a NMR relaxation rate. Possible application to heavy fermions is suggested.
- Received 8 September 1992
DOI:https://doi.org/10.1103/PhysRevLett.70.2960
©1993 American Physical Society