Dynamic properties of a symmetric spin nanocontact

B. Bourahla, A. Khater, R. Tigrine

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This paper describes a theoretical study, at a microscopic scale, of the properties of a symmetric magnetic nanocontact. In particular, we study a symmetric nanocontact separating two waveguide groups of semi-infinite spin ordered ferromagnetic monatomic chains. The individual and total conductance of bulk magnons of the chains, scattering coherently at the nanocontact, and the localised density of spin states in the nanocontact domain, are calculated and analysed. The inter-atomic magnetic exchange is varied on the nanocontact to investigate the consequences of magnetic softening and hardening for the calculated properties. Transmission and reflection scattering cross sections are calculated from elements of a Landauer type scattering matrix. The results highlight the localized spin states on the nanocontact domain and their interactions with incident magnons. The results demonstrate also the magnetic and symmetry properties of the nanocontact domain.

Original languageEnglish
Pages (from-to)343-349
Number of pages7
JournalEuropean Physical Journal B
Volume69
Issue number3
DOIs
Publication statusPublished - Jun 2009
Externally publishedYes

Fingerprint

dynamic characteristics
Scattering
magnons
S matrix theory
hardening
scattering cross sections
softening
Hardening
Waveguides
magnetic properties
waveguides
symmetry
scattering
interactions

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Dynamic properties of a symmetric spin nanocontact. / Bourahla, B.; Khater, A.; Tigrine, R.

In: European Physical Journal B, Vol. 69, No. 3, 06.2009, p. 343-349.

Research output: Contribution to journalArticle

Bourahla, B. ; Khater, A. ; Tigrine, R. / Dynamic properties of a symmetric spin nanocontact. In: European Physical Journal B. 2009 ; Vol. 69, No. 3. pp. 343-349.
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