Noise Measurement of Interacting Ferromagnetic Particles with High Resolution Hall Microprobes

K. Komatsu; D. L'Hote; S. Nakamae; F. Ladieu; V. Mosser; A. Kerlain; M. Konczykowski; E. Dubois; V. Dupuis; R. Perzynski

doi:10.1063/1.3140418

Noise Measurement of Interacting Ferromagnetic Particles with High Resolution Hall Microprobes

Disordered Systems and Neural Networks 2016-09-08 v1

Authors: K. Komatsu , D. L'Hote , S. Nakamae , F. Ladieu , V. Mosser , A. Kerlain , M. Konczykowski , E. Dubois , V. Dupuis , R. Perzynski

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Abstract

We present our first experimental determination of the magnetic noise of a superspinglass made of < 1 pico-liter frozen ferrofluid. The measurements were performed with a local magnetic field sensor based on Hall microprobes operated with the spinning current technique. The results obtained, though preliminary, qualitatively agree with the theoretical predictions of Fluctuation-Dissipation theorem (FDT) violation [1].

Keywords

magnetic noise superspinglass ferrofluid hall microprobes fluctuation-dissipation theorem violation

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@article{arxiv.1001.1637,
  title  = {Noise Measurement of Interacting Ferromagnetic Particles with High Resolution Hall Microprobes},
  author = {K. Komatsu and D. L'Hote and S. Nakamae and F. Ladieu and V. Mosser and A. Kerlain and M. Konczykowski and E. Dubois and V. Dupuis and R. Perzynski},
  journal= {arXiv preprint arXiv:1001.1637},
  year   = {2016}
}

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4pages, 2 figures

Noise Measurement of Interacting Ferromagnetic Particles with High Resolution Hall Microprobes

Abstract

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