Electrical Conductivity of Fine Crystalline Graphite under the Influence of the Hydrostatic Pressure
| Authors | I.V. Ovsiienko , L.Yu. Matzui , O.I. Prokopov , O.V. Zhuravkov |
| Affiliations |
Taras Shevchenko National University of Kyiv, Kyiv, Ukraine |
| Е-mail | |
| Issue | Volume 8, Year 2016, Number 2 |
| Dates | Received 12 February 2016; revised manuscript received 13 June 2016; published online 21 June 2016 |
| Citation | I.V. Ovsiienko, L.Yu. Matzui, O.I. Prokopov, O.V. Zhuravkov, J. Nano- Electron. Phys. 8 No 2, 02017 (2016) |
| DOI | 10.21272/jnep.8(2).02017 |
| PACS Number(s) | 68.60.Bs, 81.05.uf |
| Keywords | Fine crystalline pyrolytic graphite, Mechanical load, Electrical conductivity (10) , Fermi energy. |
| Annotation |
It was investigated the influence of hydrostatic pressure on the electrical conductivity of crystalline graphite in temperature range (77-293) K. It was revealed that the reducing of electrical resistivity in specimens of fine crystalline graphite under the action of hydrostatic pressure is due to increasing of overlap between valence and conduction bands that leads to increase of the concentration of free charge carriers. The change of the overlap of valence and conduction bands was estimated. It is shown the decrease of the distance between the graphite layers under pressure is irreversible process, when load is remove the electric resistance increases slightly, but does not acquire the initial value. |
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List of References |
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