Magnetic domain fluctuations in an antiferromagnetic film observed with coherent resonant soft x-ray scattering

Autor:	Konings, S., Schuessler-Langeheine, C., Ott, H., Weschke, E., Schierle, E., Zabel, H., Goedkoop, J. B.
Rok vydání:	2007
Předmět:	Condensed Matter - Other Condensed Matter Condensed Matter - Disordered Systems and Neural Networks Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Strongly Correlated Electrons
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.106.077402
Popis:	We report the direct observation of slow fluctuations of helical antiferromagnetic domains in an ultra-thin holmium film using coherent resonant magnetic x-ray scattering. We observe a gradual increase of the fluctuations in the speckle pattern with increasing temperature, while at the same time a static contribution to the speckle pattern remains. This finding indicates that domain-wall fluctuations occur over a large range of time scales. We ascribe this non-ergodic behavior to the strong dependence of the fluctuation rate on the local thickness of the film. Comment: to appear in Phys. Rev. Lett
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0707.2765 Zobrazit plný text záznamu View this record from Arxiv