Electrons forming complex fractal-like patterns across a specially prepared surface of semiconductor have given scientists clues about the nature of semiconductor magnetism that may lead to smaller, more efficient electronic devices as well an expansion of the relatively new scientific field of spintronics.
Spintronic devices depend upon manipulation of both the flow and magnetic spin of electrons. Having exacting control over electrons depends on the point at which a semiconductor changes from a metal (conductor) to an insulator. A team of scientists led by Princeton have been able to observe the metal-insulator transition point for the first time.
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