Between waves and patterns: Spin wave freezing in films with Dzyaloshinskii-Moriya interaction

被引:3
作者
Kisielewski, Jan [1 ]
Gruszecki, Pawel [2 ]
Krawczyk, Maciej [2 ]
Zablotskii, Vitalii [3 ]
Maziewski, Andrzej [1 ]
机构
[1] Univ Bialystok, Fac Phys, Bialystok, Poland
[2] Adam Mickiewicz Univ, Fac Phys, Poznan, Poland
[3] Czech Acad Sci, Inst Phys, Prague, Czech Republic
关键词
MAGNONIC CRYSTALS; EXCHANGE;
D O I
10.1103/PhysRevB.107.134416
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The relationship between waves and static pattern formation is an intriguing effect and remains unexplained in many areas of physics, including magnetism. We study the spin-wave-mediated spin reorientation transition (SRT) in magnetic films with uniaxial magnetic anisotropy and Dzyaloshinskii-Moriya interaction (DMI). In particular, we show that propagating spin waves can freeze in the SRT, causing periodic magnetic domains to arise, which is reminiscent of the wave amplitude distribution. This process can take place under the influence of a change in the magnetic field, but also of other parameters. Interestingly, at the SRT, DMI nonreciprocity leads to the emergence of flowing magnetization patterns, which suggests a spontaneous breaking of translational symmetry, and the formation of magnonic space-time crystals. The described phenomena are general and should take place in a large family of magnetic materials. Therefore, the results should be of great importance for the further development of spintronics and magnonics.
引用
收藏
页数:14
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