title: Theory of Andreev reflection spectroscopy for tetrahedral and non-unitary superconductors.
abstract: A general formula for point contact conductance from a normal metal tip into a superconductor is derived using the Blonder-Tinkham-Klapwijk theory of Andreev reflection, with special emphasis on non-unitary superconductors. The results of a comprehensive set of conductance spectrum calculations are presented: all symmetry-allowed gap functions for superconductors with tetrahedral symmetry, such as PrOs4Sb12, are considered, including several non-unitary cases.
authors.affiliation: Centre for the Physics of Materials and Department of Physics, McGill University, Montreal, PQ, H3A 2T8, Canada. Department of Physics and Physical Oceanography, Memorial University of Newfoundland, St. John's, NL, A1B 3X7, Canada.
authors.forename: S
authors.initials: S
authors.lastname: Bohloul
authors.forename: S H
authors.initials: SH
authors.lastname: Curnoe