Signature of superconductivity in UBe13 as seen by neutron scattering: Superconducting and magnetic energy scales
(2014) In Physical Review B (Condensed Matter and Materials Physics) 89(23).- Abstract
- We here present inelastic neutron scattering results on the strongly correlated cubic superconductor UBe13 (T-c = 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 T similar to 50 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... (More)
- We here present inelastic neutron scattering results on the strongly correlated cubic superconductor UBe13 (T-c = 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 T similar to 50 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. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4598764
- author
- Hiess, Arno LU ; Schneidewind, A. ; Stockert, O. and Fisk, Z.
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 89
- issue
- 23
- article number
- 235118
- publisher
- American Physical Society
- external identifiers
-
- wos:000339049300002
- scopus:84902578429
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.89.235118
- language
- English
- LU publication?
- yes
- id
- 5d7283c4-e20b-4248-9b25-90e4bb30ad4e (old id 4598764)
- date added to LUP
- 2016-04-01 13:20:29
- date last changed
- 2022-04-14 00:36:02
@article{5d7283c4-e20b-4248-9b25-90e4bb30ad4e,
abstract = {{We here present inelastic neutron scattering results on the strongly correlated cubic superconductor UBe13 (T-c = 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 T similar to 50 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.}},
author = {{Hiess, Arno and Schneidewind, A. and Stockert, O. and Fisk, Z.}},
issn = {{1098-0121}},
language = {{eng}},
number = {{23}},
publisher = {{American Physical Society}},
series = {{Physical Review B (Condensed Matter and Materials Physics)}},
title = {{Signature of superconductivity in UBe13 as seen by neutron scattering: Superconducting and magnetic energy scales}},
url = {{http://dx.doi.org/10.1103/PhysRevB.89.235118}},
doi = {{10.1103/PhysRevB.89.235118}},
volume = {{89}},
year = {{2014}},
}