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Spin Fluctuations in Itinerant Electron Systems

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Band-Ferromagnetism

Part of the book series: Lecture Notes in Physics ((LNP,volume 580))

Abstract

Spin fluctuations are introduced to describe the finite temperature properties of itinerant electron ferromagnets. To this end it is shown how Gaussian fiuctuations of the magnetic moment can be included in a Landau type free energy expansion. From this model various properties are derived such as the temperature dependence of the magnetic moment and the susceptibility. By including magneto - volume effects an application to Invar alloys is shown. Finally the properties of the spin fluctuations are derived from a Landau - Ginzburg model. A discussion of the Curie temperature in itinerant electron ferromagnets is given.

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Author information

Authors and Affiliations

  1. Center for Computational Materials Science, Vienna University of Technology, Vienna, Austria

    Peter Mohn & Sergei Khmelevskyi

Authors
  1. Peter Mohn
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  2. Sergei Khmelevskyi
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Editor information

Editors and Affiliations

  1. Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany

    Klaus Baberschke

  2. Institut für Physik, Humboldt-Universität zu Berlin, Invalidenstr. 110, 10115, Berlin, Germany

    Wolfgang Nolting

  3. Physikalisches Institut, Westfälische Wilhelms-Universität, Wilhelm-Klemm. Str. 10, 48149, Münster, Germany

    Markus Donath

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© 2001 Springer-Verlag Berlin Heidelberg

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Mohn, P., Khmelevskyi, S. (2001). Spin Fluctuations in Itinerant Electron Systems. In: Baberschke, K., Nolting, W., Donath, M. (eds) Band-Ferromagnetism. Lecture Notes in Physics, vol 580. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44610-9_9

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  • DOI: https://doi.org/10.1007/3-540-44610-9_9

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-42389-8

  • Online ISBN: 978-3-540-44610-1

  • eBook Packages: Springer Book Archive

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