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Transport properties

Transport properties

Light makes insulator conduct

19 Jun 1998

Japanese researchers studying the behaviour of manganese oxides believe they have discovered a compound that could lead the development of an optical computer. When the compound is illuminated with short laser pulses, it changes from an insulator to a conductor along the path of the beam. The ability to manipulate conducting paths could be used to construct optical switches (Science 280 1925).

The researchers cooled the manganese oxide compound (Pr0.7Ca0.3MnO3) to below 200 K in a zero magnet

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