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This article is cited in 4 scientific papers (total in 4 papers)
Magnetism
Specificities of spin wave focusing in EuO and EuS crystals
S. M. Bakharevab, S. P. Savchenkoa, A. P. Tankeeva a Institute of Metal Physics, Ural Division of the Russian Academy of Sciences, Ekaterinburg
b Ural Federal University named after the First President of Russia B. N. Yeltsin, Ekaterinburg
Abstract:
Specificities of spin wave focusing in EuO and EuS crystals are studied. It is shown that spin wave focusing is absent in the long-wave approximation: it is observed only for wave vectors in the second half of the Brillouin zone ($aq\gtrsim\pi$, where $a$ is the lattice constant and $q$ is the magnitude of the wave vector). It was found that, for EuO and EuS crystals, the directions of spin wave focusing differ due to the different signs of the exchange integrals responsible for the exchange interaction of the magnetic moment with the second neighbors. The directions along which a magnon caustic is formed are determined.
Received: 13.08.2018
Citation:
S. M. Bakharev, S. P. Savchenko, A. P. Tankeev, “Specificities of spin wave focusing in EuO and EuS crystals”, Fizika Tverdogo Tela, 61:2 (2019), 257–265; Phys. Solid State, 61:2 (2019), 117–126
Linking options:
https://www.mathnet.ru/eng/ftt8914 https://www.mathnet.ru/eng/ftt/v61/i2/p257
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