Low Temperature Physics: 41, 698 (2015); https://doi.org/10.1063/1.4931648
Fizika Nizkikh Temperatur: Volume 41, Number 9 (September 2015), p. 898-907 ( to contents , go back )
The generalized Landau–Lifshitz equations as tools for description of the dynamics induced by spin-polarized current in multisublattice antiferromagnet
O.V. Gomonay1 and V.M. Loktev1,2
1National Technical University of Ukraine “KPI”, 37 Peremogy Ave., Kiev 03056, Ukraine
2Boholyubov Institute for Theoretical Physics of the National Academy of Sciences of Ukraine 14-b Metrolohichna Str., Kiev 03680, Ukraine
Received May 8, 2015
Antiferromagnets (AFM) with zero or vanishingly small macroscopic magnetization are promising materials in spintronics. In the present paper we use the generalized Landau–Lifshitz’ equations to study the magnetic dynamics of AFM with three magnetic sublattices and, in particular, the switching processes between different equilibrium states. The conditions for effective switching with the use of pulse and dc current and external magnetic field are determined and the peculiarities of current-induced stationary states are investigated. The results obtained could be used for development of fast memory elements based on AFM materials.
PACS: 75.50.Ee Antiferromagnetics;
Key words: Landau–Lifshits equation, antiferromagnet, noncollinear antiferromagnet, spintronic.
Published online: July 24, 2015