Dispersion relation for surface-localized magnetic polaritons and magnetostatic waves in antiferromagnetic superlattice

Tagiyeva R. T., Saglam M., BOYACIOĞLU B.

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, cilt.68, sa.7, ss.1296-1304, 2007 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 68 Sayı: 7
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.jpcs.2007.02.013
  • Dergi Adı: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1296-1304
  • Anahtar Kelimeler: magnetic materials, multilayers, surfaces, superlattices, spin-density, SPIN-WAVES, MODES, EXCITATIONS
  • Ankara Üniversitesi Adresli: Evet

Özet

In addition to the general dispersion equation for surface-localized magnetic polaritons and magnetostatic waves, which propagate in the system antiferromagnetic superlattice-antiferromagnet, we derive a simplified result for the long-wavelength limit lambda >> L (L is the period of superlattice) when the superlattice is found to behave like an anisotropic bulk medium (effective-medium approach). The dispersion curves and frequency region of the existence of the surface magnetic polaritons and magnetostatic waves are presented numerically for several values of the external magnetic field and for different antiferromagnetic materials. (C) 2007 Elsevier Ltd. All rights reserved.