Spin Ice Monopoles
Physicists have made analogues of magnetic monopoles in spin ice.
Competing interactions and a distinct crystal structure in spin ice produce excitations that behave like magnetic monopoles, hypothetical magnetic particles with only an isolated North or South pole.
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Reporters may freely use this image. Credit format: Image courtesy of Claudio Castelnovo (Royal Holloway University of London), Artistic representation by A.Canossa (2011).
