%0 Journal Article
%A Hiess, A.
%A Schneidewind, A.
%A Stockert, O.
%A Fisk, Z.
%T Signature of superconductivity in UBe${_1}$${_3}$ as seen by neutron scattering: Superconducting and magnetic energy scales
%J Physical review / B
%V 89
%N 23
%@ 1098-0121
%C College Park, Md.
%I APS
%M FZJ-2014-03513
%P 235118
%D 2014
%X 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. Weobserved spin dynamics at a unique momentum space position building up below T ∼ 50 K and changingsignificantly on entering the superconducting state. The observed short-range longitudinal character of thecorrelations can be understood as a result of competing magnetic interactions. The energy dependence in thenormal state reflects the energy scales determined from specific heat, whereas the low-temperature data suggestthe opening of a superconducting gap. Our findings are consistent with a superconducting order parameterexhibiting s± or d-wave symmetry and placing pure UBe13 in the strong coupling regime.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000339049300002
%R 10.1103/PhysRevB.89.235118
%U https://juser.fz-juelich.de/record/154115