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Measurement of the charge and current of magnetic monopoles in spin ice

Author

Listed:
  • S. T. Bramwell

    (University College London, 17–19 Gordon Street, London WC1H 0AH, UK)

  • S. R. Giblin

    (ISIS Facility, Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX, UK)

  • S. Calder

    (University College London, 17–19 Gordon Street, London WC1H 0AH, UK)

  • R. Aldus

    (University College London, 17–19 Gordon Street, London WC1H 0AH, UK)

  • D. Prabhakaran

    (Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UK)

  • T. Fennell

    (Institut Laue-Langevin, 6 rue Jules Horowitz, 38042 Grenoble, France)

Abstract

'Magnetricity' demonstrated in spin ice Electric charges and currents are ubiquitous, but their magnetic counterparts are elusive. With the recent prediction, then demonstration, of the existence of magnetic 'monopoles' — particles with a net magnetic charge resembling a magnet with only one pole — in magnetically frustrated materials called 'spin ice', a system in which 'magnetricity' might be found has become available. Using the spin ice dysprosium titanate pyrochlore (Dy2Ti2O7), Bramwell et al. show that magnetic charges and their dynamics can be understood in terms of a magnetic analogue of the theory of electrolytes (substances that become ions in solution and are capable of conducting electricity). They observe real magnetic currents and determine the elementary unit of magnetic charge. The findings establish an instance of a perfect symmetry between electricity and magnetism.

Suggested Citation

  • S. T. Bramwell & S. R. Giblin & S. Calder & R. Aldus & D. Prabhakaran & T. Fennell, 2009. "Measurement of the charge and current of magnetic monopoles in spin ice," Nature, Nature, vol. 461(7266), pages 956-959, October.
    • Handle: RePEc:nat:nature:v:461:y:2009:i:7266:d:10.1038_nature08500
    DOI: 10.1038/nature08500
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    Cited by:

    1. J. Guo & P. Ghosh & D. Hill & Y. Chen & L. Stingaciu & P. Zolnierczuk & C. A. Ullrich & D. K. Singh, 2023. "Persistent dynamic magnetic state in artificial honeycomb spin ice," Nature Communications, Nature, vol. 14(1), pages 1-6, December.
    2. Oleksii M. Volkov & Oleksandr V. Pylypovskyi & Fabrizio Porrati & Florian Kronast & Jose A. Fernandez-Roldan & Attila Kákay & Alexander Kuprava & Sven Barth & Filipp N. Rybakov & Olle Eriksson & Sebas, 2024. "Three-dimensional magnetic nanotextures with high-order vorticity in soft magnetic wireframes," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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