Spin-wave theory for anisotropic Heisenberg antiferromagnets

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.44.446· OSTI ID:5776219

Soukoulis, C M; Datta, S; Lee, Y H ^[1]

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1. Ames Laboratory and Department of Physics, Iowa State University, Ames, Iowa 50011 (US)

The anisotropic Heisenberg antiferromagnet (AF), which is defined as a three-dimensional simple-cubic lattice with in-plane antiferromagnetic interaction {ital J}{sub } and interplane coupling {ital J}{sub {perpendicular}}={gamma}{ital J}{sub } and is believed to describe the magnetic properties of the cupric oxide materials, is studied using low-temperature spin-wave theory. The dependence of the {ital T}=0 staggered magnetization, ground-state energy, transverse susceptibility, spin-wave velocity, and the Neel temperature {ital T}{sub {ital N}} on the anisotropy parameter {gamma} (0{le}{gamma}{le}1) are obtained. These results are found to be in satisfactory agreement with existing experiments on cupric oxide materials. The apparent difference between the muon-spin resonance and neutron-scattering results for the ordered moment in the AF state is well explained.

• OSTI ID: 5776219
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 44:1; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSOLUTE ZERO TEMPERATURE
ANTIFERROMAGNETIC MATERIALS
ANTIFERROMAGNETISM
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL MODELS
CRYSTAL STRUCTURE
CUBIC LATTICES
DIFFRACTION
ENERGY LEVELS
GROUND STATES
HEISENBERG MODEL
HIGH-TC SUPERCONDUCTORS
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MAGNETIZATION
MATERIALS
MATHEMATICAL MODELS
MUON SPIN RELAXATION
NEUTRON DIFFRACTION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RELAXATION
SCATTERING
SPIN WAVES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THREE-DIMENSIONAL CALCULATIONS
TRANSITION ELEMENT COMPOUNDS