Electrical properties of Cu-O monolayers intercalated into crystalline graphite |
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Authors: | V. F. Masterov A. V. Prikhod’ko O. I. Kon’kov A. A. Shaklanov |
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Affiliation: | (1) St. Petersburg State Technical University, 195251 St. Petersburg, Russia |
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Abstract: | Electrical properties of Cu-O monolayers intercalated into crystalline graphite have been studied at microwave frequencies (up to 1 GHz) in the temperature range 80–400 K. As the temperature increases above 300 K, the resistance of the starting graphite samples increases because of oxygen desorption. Heating a sample containing intercalated Cu-O layers results in a transition from the metallic to the semiconducting (or insulating) state in the 95–130 K interval. At T=8 K, the samples exhibit microwave absorption typical of superconductors (this effect is not observed at T=260 K). Fiz. Tverd. Tela (St. Petersburg) 39, 97–100 (January 1997) |
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