Pingie: HTTP:: Fractional Quantum Hall Effect Demonstrated in Graphene

HTTP:: Fractional Quantum Hall Effect Demonstrated in Graphene
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Graphene, the one-atom-thick sheet of carbon atoms that was discovered in 2004 at the University of Manchester, is the most avidly researched material today in the field of condensed-matter physics. Because electrons flow in a very peculiar way through it, experts believe it may constitute the replacement of choice for silicon, the main semiconductor in computer chips today. Just recently, researchers have discovered a new peculiarity in the material, when they have demonstrated the fractional quantum Hall Effect in it, ScienceNow reports. The scientists essentially proved that, within graphene, electrons could team up in pairs, which then behaved as if they were particles with only a fraction of the original electrons' mass. The FQHE is an embellishment of an esoteric phenomenon known as the Hall Effect, which was first established in 1879. The discovery of the QHE won the Nobel Prize in physics in 1985. As a voltage is applied to a metal bar, electrons within it flow !
naturally from one end to the other. If a magnetic field is applied vertically to the bar, then the electrons will be subjected to a sideways shove, which will force them to conglomerate on one side of the bar. This means that a voltage is also developed along the width of the bar, and also that the sideways volta...
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http://news.softpedia.com/news/Fractional-Quantum-Hall-Effect-Demonstrated-in-Graphene-124368.shtml
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