RT info:eu-repo/semantics/article
T1 Spin waves in ferrimagnets near the angular magnetization compensation temperature: A micromagnetic study
A1 Sánchez-Tejerina, Luis
A1 Osuna Ruiz, David
A1 Martínez, Eduardo
A1 López Díaz, Luis
A1 Raposo, Víctor
A1 Alejos, Óscar
AB Spin wave propagation along a ferrimagnetic strip with out-of-plane magnetization is studied by means of micromagnetic simulations. The ferrimagnetic material is considered to be formed by two antiferromagnetically coupled sub-lattices. Two critical temperatures can be defined for such systems: that of magnetization compensation and that of angular momentum compensation, both different due to distinct Landé factors for each sub-lattice. Spin waves in the strip are excited by a spin current injected at one of its edges. The obtained dispersion diagrams show exchange-dominated forward volume spin waves. For a given excitation frequency, the Néel vector describes highly eccentric orbits, the eccentricity depending on temperature, whose semi-major axis is oriented differently at distinct locations on the FiM strip.
PB AIP Publishing
YR 2024
FD 2024-08-19
LK https://uvadoc.uva.es/handle/10324/69593
UL https://uvadoc.uva.es/handle/10324/69593
LA eng
NO Appl. Phys. Lett. 125, 082402 (2024)
DS UVaDOC
RD 22-dic-2024