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The terahertz (THz) conductivities in the metal-insulator transition process of VO2 thin films on quartz substrates were investigated by using terahertz time-domain spectroscopy. It was found that the THz absorption and conductivity of the thin films are sensitive to the sputtering gas pressure, and the maximum THz amplitude modulation can reach as high as 75.9%. The complex THz conductivity in metallic...
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