Calculation of spin-wave modes for a stepped surface in a Heisenberg ferromagnet

Journal Article · Wed Jun 01 00:00:00 EDT 1977 · Phys. Rev., B; (United States)

DOI:https://doi.org/10.1103/PhysRevB.15.5320· OSTI ID:7219456

Salzberg, J B; Falicov, L M

We present a transfer-matrix calculation of the spin-wave spectrum of a face-centered-cubic ferromagnet with a stepped-surface structure. The calculation is based on a Heisenberg Hamiltonian with nearest-neighbor interaction only. It does not include either anisotropy terms or relaxation and reconstruction at the surface. It is found that localized step modes exist in the vicinity of the step edge and that atoms in that neighborhood are magnetically softer than ordinary surface atoms. Spin-wave spectra and magnetization versus temperature curves are presented for atoms at various positions.

• Research Organization: Instituto de Fisica ''Gleb Wataghin'', Universidade Estadual de Campinas, 13100 Campinas, S. P., Brazil
• OSTI ID: 7219456
• Journal Information: Phys. Rev., B; (United States), Journal Name: Phys. Rev., B; (United States) Vol. 15:11; ISSN PLRBA
• Country of Publication: United States
• Language: English

Related Subjects

656000* -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL LATTICES
CRYSTAL MODELS
CRYSTAL STRUCTURE
CUBIC LATTICES
FCC LATTICES
FERROMAGNETISM
HEISENBERG MODEL
MAGNETISM
MAGNETIZATION
MATHEMATICAL MODELS
SPECTRA
SPIN WAVES
TEMPERATURE DEPENDENCE