Neutron-scattering measurements of long-range antiferromagnetic order in URu sub 2 Si sub 2

Journal Article · Sun Dec 16 23:00:00 EST 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.65.3189· OSTI ID:5975656

Mason, T E; Gaulin, B D; Garrett, J D ^[1]; Tun, Z; Buyers, W J.L. ^[2]; Isaacs, E D ^[3]

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1. Department of Physics, McMaster University, Hamilton, ON (Canada) Institute for Materials Research, McMaster University, Hamilton, Ontario (Canada)
2. AECL Research, Chalk River Laboratories, Chalk River, Ontario (Canada)
3. AT T Bell Laboratories, 600 Mountain Avenue, Murray Hill, NJ (USA)

Neutron scattering from a high-quality single crystal of the heavy-fermion superconductor URu{sub 2}Si{sub 2} has shown the onset of the small, antiferromagnetic ordered moment (0.037{mu}{sub {ital B}}) occurs abruptly at {ital T}{sub {ital N}}, unlike the gradual onset in previously studied samples. The results are in good agreement with x-ray-resonance magnetic scattering. The magnitude of the moment and the magnetic excitation spectrum are the same as previously observed, including the anomalous damping of excitations with a component of momentum transfer along the {ital c}{sup *} axis. This shows that these are intrinsic properties of URu{sub 2}Si{sub 2} and confirms the microscopic coexistence of antiferromagnetism and superconductivity.

• OSTI ID: 5975656
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 65:26; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTINIDE COMPOUNDS
AMPLITUDES
ANTIFERROMAGNETISM
COHERENT SCATTERING
CRYSTALS
DATA
DIFFRACTION
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HEAVY LEPTONS
INFORMATION
LEPTONS
MAGNETISM
MONOCRYSTALS
NEEL TEMPERATURE
NEUTRON DIFFRACTION
NUMERICAL DATA
PHYSICAL PROPERTIES
POSTULATED PARTICLES
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
RUTHENIUM SILICIDES
SCATTERING
SILICIDES
SILICON COMPOUNDS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
URANIUM COMPOUNDS
URANIUM SILICIDES
VERY LOW TEMPERATURE