Minority carriers in graphite

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Abstract

Quantum oscillations as a function of magnetic field in the Hall effect and thermoelectric power are studied in two samples of pressure-annealed pyrolytic graphite. Only the oscillations originating from minority-Fermi-surface carriers are discussed. de Haas-van Alphen-type frequencies are measured over a wide range of angles between the magnetic field and the c axis of the Brillouin zone. The major conclusions are as follows: (i) There are at least two minority carriers in graphite; (ii) pyrolytic and natural single crystals have the same minority-Fermi-surface sections; (iii) both minority carriers observed by quantum effects very likely originate from the corners of the Brillouin zone near the H points; and (iv) under the assumption that γ0=3.18 eV, we estimate that Δ=+0.004 eV.

Original languageEnglish (US)
Pages (from-to)3393-3398
Number of pages6
JournalPhysical Review B
Volume4
Issue number10
DOIs
StatePublished - Jan 1 1971

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Fermi surface
Graphite
minorities
minority carriers
Brillouin zones
Fermi surfaces
graphite
Magnetic fields
oscillations
pyrolytic graphite
Thermoelectric power
Hall effect
magnetic fields
Single crystals
single crystals
estimates

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Minority carriers in graphite. / Woollam, John A.

In: Physical Review B, Vol. 4, No. 10, 01.01.1971, p. 3393-3398.

Research output: Contribution to journalArticle

Woollam, John A. / Minority carriers in graphite. In: Physical Review B. 1971 ; Vol. 4, No. 10. pp. 3393-3398.
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