中国物理B ›› 2015, Vol. 24 ›› Issue (9): 97302-097302.doi: 10.1088/1674-1056/24/9/097302

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Magnetization dynamics of mixed Co-Au chains on Cu(110) substrate: Combined ab initio and kinetic Monte Carlo study

K. M. Tsysar, S. V. Kolesnikov, A. M. Saletsky   

  1. Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russian Federation
  • 收稿日期:2015-01-12 修回日期:2015-03-25 出版日期:2015-09-05 发布日期:2015-09-05
  • 基金资助:
    Project supported by the Russian Foundation of Basic Researches.

Magnetization dynamics of mixed Co-Au chains on Cu(110) substrate: Combined ab initio and kinetic Monte Carlo study

K. M. Tsysar, S. V. Kolesnikov, A. M. Saletsky   

  1. Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russian Federation
  • Received:2015-01-12 Revised:2015-03-25 Online:2015-09-05 Published:2015-09-05
  • Contact: S. V. Kolesnikov E-mail:kolesnikov@physics.msu.ru
  • Supported by:
    Project supported by the Russian Foundation of Basic Researches.

摘要: We present an investigation of the one-dimensional ferromagnetism in Au-Co nanowires deposited on the Cu(110) surface. By using the density functional theory, the influence of the nonmagnetic copper substrate Cu(110) on the magnetic properties of the bimetallic Au-Co nanowires is studied. The results show the emergence of magnetic anisotropy in the supported Au-Co nanowires. The magnetic anisotropy energy has the same order of magnitude as the exchange interaction energy between Co atoms in the wire. Our electronic structure calculation reveals the emergence of new hybridized bands between Au and Co atoms and surface Cu atoms. The Curie temperature of the Au-Co wires is calculated by means of kinetic Monte Carlo simulation. The strong size effect of the Curie temperature is demonstrated.

关键词: magnetic properties, nanowires, density functional theory, kinetic Monte Carlo simulation

Abstract: We present an investigation of the one-dimensional ferromagnetism in Au-Co nanowires deposited on the Cu(110) surface. By using the density functional theory, the influence of the nonmagnetic copper substrate Cu(110) on the magnetic properties of the bimetallic Au-Co nanowires is studied. The results show the emergence of magnetic anisotropy in the supported Au-Co nanowires. The magnetic anisotropy energy has the same order of magnitude as the exchange interaction energy between Co atoms in the wire. Our electronic structure calculation reveals the emergence of new hybridized bands between Au and Co atoms and surface Cu atoms. The Curie temperature of the Au-Co wires is calculated by means of kinetic Monte Carlo simulation. The strong size effect of the Curie temperature is demonstrated.

Key words: magnetic properties, nanowires, density functional theory, kinetic Monte Carlo simulation

中图分类号:  (Electronic structure of nanoscale materials and related systems)

  • 73.22.-f
75.75.-c (Magnetic properties of nanostructures) 75.40.Mg (Numerical simulation studies)