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quantum Hall effect |
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quantum Hall effect [′kwän·təm ′hȯl i‚fekt] (electronics) A phenomenon exhibited by certain semiconductor devices at low temperatures and high magnetic fields, whereby the Hall resistance becomes precisely equal to (h/e2)/n, wherehis Planck's constant,eis the electronic charge, andnis either an integer or a rational fraction. Also known as von Klitzing effect. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The researchers say that the technique will enable scientists to probe quantum effects that so far have been the subject only of speculation. Often there is a clear size effect with nanomaterials--a "tipping point," below which the surface energy of particles and features or quantum effects starts to take effect (FIGURE 1). Often there is a clear size effect with nanomaterials--a "tipping point," below which the surface energy of particles and features or quantum effects starts to take effect (Figure 1). |
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