Magnetic excitations and ordering in the heavy-electron superconductor URu/sub 2/Si/sub 2/
Journal Article
·
· Phys. Rev. Lett.; (United States)
Neutron scattering demonstrates the coexistence of antiferromagnetic order and superconductivity below 1 K in the heavy-electron system URu/sub 2/Si/sub 2/. It is found that the upper (17.5 K) transition is to an antiferromagnetic phase with a (100) modulation wave vector and spins along the tetragonal c-axis. The ordered moment is unusually small, (0.03 +- 0.01)..mu../sub B/. However, spin waves develop from damped, finite-gap excitations above T/sub N/, and they are intense, propagating, and longitudinal with a zone centre gap of 1.8 meV.
- Research Organization:
- Riso National Laboratory, DK-4000 Roskilde, Denmark
- OSTI ID:
- 6658079
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 58:14; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE COMPOUNDS
ANTIFERROMAGNETISM
COHERENT SCATTERING
DAMPING
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTARY PARTICLES
FERMIONS
FLUCTUATIONS
HEAVY LEPTONS
LEPTONS
MAGNETISM
NEUTRON DIFFRACTION
PHYSICAL PROPERTIES
POSTULATED PARTICLES
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
RUTHENIUM SILICIDES
SCATTERING
SILICIDES
SILICON COMPOUNDS
SPIN WAVES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
URANIUM COMPOUNDS
URANIUM SILICIDES
VARIATIONS
VERY LOW TEMPERATURE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE COMPOUNDS
ANTIFERROMAGNETISM
COHERENT SCATTERING
DAMPING
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTARY PARTICLES
FERMIONS
FLUCTUATIONS
HEAVY LEPTONS
LEPTONS
MAGNETISM
NEUTRON DIFFRACTION
PHYSICAL PROPERTIES
POSTULATED PARTICLES
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
RUTHENIUM SILICIDES
SCATTERING
SILICIDES
SILICON COMPOUNDS
SPIN WAVES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
URANIUM COMPOUNDS
URANIUM SILICIDES
VARIATIONS
VERY LOW TEMPERATURE