Abstract
We present an experimental setup developed to measure locally the fluctuations of themagnetization of physical systems such as spin and superspin glasses. It is based onmicronic and submicronic Hall probes. We present the noise reduction at ambienttemperature owing to the use of the spinning current technique. Finally, we show why, withsuch probes, the noise measured on a macroscopic sample probes only a microscopicvolume of the sample.
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