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Magnons

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Book cover Topology in Magnetism

Part of the book series: Springer Series in Solid-State Sciences ((SSSOL,volume 192))

Abstract

Spin waves and their quanta magnons are the dynamic eigen-excitations of a magnetic system. They provide the basis for the description of spatial and temporal evolution of the magnetization distribution of a magnetic object. The unique features of spin waves such as the possibility to carry spin information over relatively long distances, the possibility to achieve sub-micrometer wavelength at microwave frequencies, and controllability by electronic signal via magnetic fields make these waves uniquely suited for implementation of novel integrated electronic devices characterized by high speed, low power consumption, and extended functionalities. It is important to notice that contrary to photons and phonons magnons possess an anisotropic dispersion. The energy/frequency of a magnons depends not only on the absolute value of the wave vector of the magnon, but also on its angle relative to the orientation of the static magnetization.

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Authors and Affiliations

  1. Institute for Applied Physics and Center for Nanotechnology, University of Münster, Münster, Germany

    Sergej O. Demokritov

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  1. Sergej O. Demokritov
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Correspondence to Sergej O. Demokritov .

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  1. University of New Hampshire, Durham, NH, USA

    Jiadong Zang

  2. Unité Mixte de Physique CNRS/Thales, Palaiseau, France

    Vincent Cros

  3. Materials Science Division, Argonne National Laboratory, Lemont, IL, USA

    Axel Hoffmann

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Demokritov, S.O. (2018). Magnons. In: Zang, J., Cros, V., Hoffmann, A. (eds) Topology in Magnetism. Springer Series in Solid-State Sciences, vol 192. Springer, Cham. https://doi.org/10.1007/978-3-319-97334-0_10

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