2010/10/12 by L. Szunyogh, L. Udvardi, J Jackson +4
Materials Science · Mathematics · Physics and Astronomy · #Anisotropy #Antiferromagnetism #Cluster (spacecraft) #Computer science #Condensed matter physics #Coupling (piping) #Exchange bias #Ferromagnetism #Geometry #Interface (matter) #Magnetic Properties and Applications #Magnetic anisotropy #Magnetic field #Magnetic moment #Magnetic properties of thin films #Magnetization #Materials science #Mathematics #Molecule #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Spin model #Symmetry (geometry) #Thermodynamics #cond-mat.other #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.83.024401
10 pages, 6 figures
arxiv created 2010/10/12 · openalex publication_date 2011/01/04 · arxiv updated 2015/05/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In order to derive tensorial exchange interactions and local magnetic anisotropies in itinerant magnetic systems, an approach combining the spin-cluster expansion with the relativistic disordered local moment scheme is introduced. The theoretical background and computational aspects of the method are described in detail. The exchange interactions and site-resolved anisotropy contributions for the IrMn3/Co(111) interface, a prototype for an exchange bias system, are calculated including a large number of magnetic sites from both the antiferromagnet and ferromagnet. Our calculations reveal that the coupling between the two subsystems is fairly limited to the vicinity of the interface. The magnetic anisotropy of the interface system is discussed, including effects of the Dzyaloshinskii-Moriya interactions that appear due to symmetry breaking at the interface.