TY  - JOUR
AU  - Hiess, A.
AU  - Schneidewind, A.
AU  - Stockert, O.
AU  - Fisk, Z.
TI  - Signature of superconductivity in UBe${_1}$${_3}$ as seen by neutron scattering: Superconducting and magnetic energy scales
JO  - Physical review / B
VL  - 89
IS  - 23
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2014-03513
SP  - 235118
PY  - 2014
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000339049300002
DO  - DOI:10.1103/PhysRevB.89.235118
UR  - https://juser.fz-juelich.de/record/154115
ER  -