| タイトル | Magnetic field generated resistivity maximum in graphite |
| 本文（外部サイト） | http://hdl.handle.net/2060/19760014991 |
| 著者（英） | Vold, T.; Devaty, R.; Kreps, L. W.; Wollam, J. A.; Rojeski, M. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1976-01-01 |
| 言語 | eng |
| 内容記述 | In zero magnetic field, B, the electrical resistivity, rho(O,T) of highly oriented pyrolytic (polycrystalline) graphite drops smoothly with decreasing T, becoming constant below 4 K. However, in a fixed applied magnetic field B, the resistivity rho(B,T) goes through a maximum as a function of T, with larger maximum for larger B. The temperature of the maximum increases with B, but saturates to a constant value near 25 K (exact T depends on sample) at high B. In single crystal graphite a maximum in rho(B,T) as a function of T is also present, but has the effects of Landau level quantization superimposed. Several possible explanations for the rho(B,T) maximum are proposed, but a complete explanation awaits detailed calculations involving the energy band structure of graphite, and the particular scattering mechanisms involved. |
| NASA分類 | SOLID-STATE PHYSICS |
| レポートNO | 76N22079
E-8705
NASA-TM-X-71910 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/186234 |
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