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Landau level quantization and possible superconducting instabilities in highly oriented pyrolitic graphite |
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| Authors: | Y Kopelevich V V Lemanov S Moehlecke J H S Torres |
| Institution: | 1. Instituto de Fisica “Gleb Wataghin,”, Universidade Estadual de Campinas, Unicamp, 13083-970, Campinas, S?o Paulo, Brazil 2. A. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia 3. A. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia 4. Instituto de Fisica “Gleb Wataghin,”, Universidade Estadual de Campinas, Unicamp, 13083-970, Campinas, S?o Paulo, Brazil |
| Abstract: | Measurements of the basal-plane resistivity ρ a(T,H) performed on highly oriented pyrolitic graphite, with magnetic field H∥c-axis in the temperature interval 2–300K and fields up to 8 T, provide evidence for the occurrence of both field-induced and zero-field superconducting instabilities. Additionally, magnetization M(T,H) measurements suggest the occurrence of Fermi surface instabilities which compete with the superconducting correlations. Fiz. Tverd. Tela (St. Petersburg) 41, 2135–2138 (December 1999) |
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