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Weak Localization Effects in Fluorineintercalated Graphite Fibers

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Abstract

The intercalation of fluorine into graphite introduces defects into the highly crystalline pristine fibers. These defectsare studied using temperature-dependent resistivity and magnetoresistance measurements. A logarithmic increase in resistivity at low temperature is observed, whereas the high temperature behavior is metallic. At weak magnetic fields and low temperatures, a negative magnetoresistance is observed, which becomes positive at high fields. These effects are explainedusing the two theories of weak localization and hole-hole interaction. In the light of TEM pictures of the microstructure of the fluorinated fibers, the origin of the defects in the intercalated fibers is discussed.

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Acknowledgement

This work was supported by NSF under grant #8819896-DMR. We acknowledge many stimulating discussions with Dr. G. Dresselhaus. The high-field experiments have been carried out at the Francis Bitter National Magnet Laboratory (supported by the National Science Foundation).

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Authors and Affiliations

  1. Massachusetts Institute Of Technology, Cambridge, Massachusetts, 02139, USA

    S. L. Di Vittorio & M. S. Dresselhaus

  2. Universite Catholique de Louvain, tLouvain-la-Neuve, Belgium, UK

    V. Bayot, L. Piraux & J -P. Issi

  3. Shinshu University, Nagano, 380, Japan

    M. Endo

  4. Kyoto University, Sakyo-Ku, Kyoto, 606, Japan

    T. Nakajima

Authors
  1. S. L. Di Vittorio
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  2. M. S. Dresselhaus
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  3. V. Bayot
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  4. L. Piraux
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  5. J -P. Issi
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  6. M. Endo
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  7. T. Nakajima
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Di Vittorio, S.L., Dresselhaus, M.S., Bayot, V. et al. Weak Localization Effects in Fluorineintercalated Graphite Fibers. MRS Online Proceedings Library 209, 329–334 (1990). https://doi.org/10.1557/PROC-209-329

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  • DOI: https://doi.org/10.1557/PROC-209-329

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