Electrical resistivity of single crystal graphite under pressure: an anisotropic 3-D semimetal
1998 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, Vol. 57, no 11, 6227-6230 p.Article in journal (Refereed) Published
The in-plane (ρa) and c-axis (ρc) resistivities of natural single-crystal graphite have been measured from 4 to 450 K at zero pressure and from 77 to 450 K under pressures up to 500 MPa. Data for ρc differ strongly from earlier results obtained on synthetic graphite in showing a strong T dependence of the pressure coefficient, while data for ρa agree well with those from previous studies. Our results can be analyzed quantitatively in a simple free-electron model, and we conclude that in contrast to quasi-two-dimensional synthetic graphite, natural single-crystal graphite is an anisotropic three-dimensional semimetal.
Place, publisher, year, edition, pages
American Physical Society , 1998. Vol. 57, no 11, 6227-6230 p.
Graphite, single crystal graphite, natural graphite, resistivity, resistance, anisotropy, metal, semimetal, band structure, in-plane resistivity, c-axis resistivity
Condensed Matter Physics
Research subject Physics
IdentifiersURN: urn:nbn:se:umu:diva-23332DOI: 10.1103/PhysRevB.57.6227OAI: oai:DiVA.org:umu-23332DiVA: diva2:223124