【摘 要】
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We present our experimental results supporting optical-electrical hybrid data storage by optical recording and electrical reading using Ge2Sb2 Tehas recording m
【机 构】
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Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
论文部分内容阅读
We present our experimental results supporting optical-electrical hybrid data storage by optical recording and electrical reading using Ge2Sb2 Tehas recording medium. The sheet resistance of laser-irradiated Ge2Sb2 Te5 films exhibits an abrupt change of four orders of magnitude (from 107 to 103 Ω/sq) with increasing laser power, current-voltage curves of the amorphous area and the laser-crystallized dots, measured by a conductive atomic force microscope (C-AFM), show that their resistiyities are 2.725 and 3.375 × 10-3 Ω, respectively, the surface current distribution in the films also shows high and low resistance states. All these results suggest that the laser-recorded bit can be read electrically by measuring the change of electrical resistivity, thus making optical-electrical hybrid data storage possible.
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