Skip to main content
eScholarship
Open Access Publications from the University of California

Signature of superconductivity in UBe13 as seen by neutron scattering: Superconducting and magnetic energy scales

  • Author(s): Hiess, A
  • Schneidewind, A
  • Stockert, O
  • Fisk, Z
  • et al.
Abstract

We here present inelastic neutron scattering results on the strongly correlated cubic superconductor UBe13 (Tc = 0.85 K) obtained on a large single crystal by high-resolution cold neutron three-axis spectroscopy. We observed spin dynamics at a unique momentum space position building up below Tâ50 K and changing significantly on entering the superconducting state. The observed short-range longitudinal character of the correlations can be understood as a result of competing magnetic interactions. The energy dependence in the normal state reflects the energy scales determined from specific heat, whereas the low-temperature data suggest the opening of a superconducting gap. Our findings are consistent with a superconducting order parameter exhibiting s± or d-wave symmetry and placing pure UBe13 in the strong coupling regime. © 2014 American Physical Society.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View