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May 20th, 2004
Strong magnetic field converts nanotube from metal to semiconductor
By threading a magnetic field through a carbon nanotube, scientists have switched the molecule between metallic and semiconducting states, a phenomenon predicted by physicists some years ago, but never before clearly seen in individual molecules. In the May 21 issue of the journal Science, researchers from the University of Illinois at Urbana-Champaign present experimental evidence that a nanotube's electronic structure can be altered in response to a magnetic field.
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