| Magnetic domain fluctuations in an antiferromagnetic film observed with coherent resonant soft x-ray scattering (2007) | |||||||||
Abstract | |||||||||
| 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 the coexistence of static and fluctuating domains in the film. We ascribe this non-ergodic behavior to thickness variations caused by steps at the interfaces.. Comment: 4 pages; 4 figures | |||||||||
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