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Researchers from University of Exeter publish findings in modern physics
July 22nd, 2009
"We have measured the circular photogalvanic effect in a GaAs two-dimensional hole gas in zero and perpendicular magnetic field," investigators in Exeter, the United Kingdom report.
"The increase of the photoinduced voltage in very small magnetic field, when excited at fixed photon energy, demonstrates behavior reminiscent of that seen in anomalous Hall measurements on ferromagnets. The spectral dependence of the photoinduced voltage in magnetic field exhibits a series of maxima and minima that oscillate around zero volts," wrote D.A. Vasyukov and colleagues, University of Exeter.
The researchers concluded: "When plotted, the energy positions of these...
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Source: Electronics Newsweekly (2009-07-22)