Collective magnon modes for magnetic dot arrays

Autor:	C. E. Zaspel, A. Yu. Galkin, B.A. Ivanov
Rok vydání:	2005
Předmět:	Physics Magnetization Magnetic anisotropy Magnetic domain Condensed matter physics Ferromagnetism Magnon Condensed Matter Physics Anisotropy Square lattice Electronic Optical and Magnetic Materials Magnetic field
Zdroj:	Journal of Magnetism and Magnetic Materials. 286:351-355
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2004.09.092
Popis:	Both static and dynamic properties of the magnetic dot array with the uniform in-plane magnetization with the most symmetric configuration (round dots placed in a square lattice) have been investigated. Due to the long distance dipole coupling physical properties, such system has a strong four-fold anisotropy with respect both to orientation of the total array magnetization regarding the lattice symmetry axis and to the wave vector direction of a collective oscillations wave. The ferromagnetic state is stable only in the presence of the magnetic field; however, it can also be stable against small perturbations for some orientations of the total magnetization.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7f95d0048430f4450237f7584ccaa72b https://doi.org/10.1016/j.jmmm.2004.09.092 Zobrazit plný text záznamu Full Text from ScienceDirect