Have physicists seen magnetic monopoles?
Date: Thursday, October 09, 2003 @ 23:33:52 GMT
Topic: Science
From PhysicsWeb (2 Oct 2003)
Paul Dirac first put forward the idea of the magnetic monopole - a particle that carries an isolated north or south magnetic pole - in 1931, but all experimental searches for these elusive particles have proved fruitless. However, a group of physicists from Japan, China and Switzerland are now claiming that they have found indirect evidence for monopoles. The team observed an anomalous Hall effect in a ferromagnetic crystal that they say can only be explained by the existence of magnetic monopoles (Z Fang et al. 2003 Science 302 92).
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