Incommensurate magnetic order in the heavy fermion superconductor UNi[sub 2]Al[sub 3]
Journal Article
·
· Physical Review Letters; (United States)
- Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1 (Canada)
- AECL Research, Chalk River Laboratories, Chalk River, Ontario K0J 1J0 (Canada)
- Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States)
Neutron scattering measurements show UNi[sub 2]Al[sub 3] to be unique among heavy fermion superconductors in that below [ital T][sub [ital N]][similar to]5.2 K it displays long range magnetic order which is incommensurate with its chemical lattice. The ordering wave vector is (1/2[plus minus][delta], 0, 1/2) where [delta]=0.110[plus minus]0.003. The measured superlattice intensities are well described by the presence of a longitudinal spin density wave within the hexagonal basal plane, polarized along [ital a][sup *]. The magnitude of the maximum ordered moment is found to be very small; [mu][sub ord]=(0.24[plus minus]0.10)[mu][sub [ital B]].
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5258969
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:1; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
360107 -- Metals & Alloys-- Superconducting Properties-- (1992-)
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTINIDE ALLOYS
ALLOY SYSTEMS
ALLOYS
ALUMINIUM ALLOYS
COHERENT SCATTERING
CRYSTALS
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
INTERMETALLIC COMPOUNDS
MAGNETISM
MONOCRYSTALS
NEUTRON DIFFRACTION
NICKEL ALLOYS
PHYSICAL PROPERTIES
SCATTERING
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TERNARY ALLOY SYSTEMS
URANIUM ALLOYS
360104* -- Metals & Alloys-- Physical Properties
360107 -- Metals & Alloys-- Superconducting Properties-- (1992-)
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTINIDE ALLOYS
ALLOY SYSTEMS
ALLOYS
ALUMINIUM ALLOYS
COHERENT SCATTERING
CRYSTALS
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
INTERMETALLIC COMPOUNDS
MAGNETISM
MONOCRYSTALS
NEUTRON DIFFRACTION
NICKEL ALLOYS
PHYSICAL PROPERTIES
SCATTERING
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TERNARY ALLOY SYSTEMS
URANIUM ALLOYS