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Fermi Surfaces of Acceptor Intercalated Compounds: Evidence Frov Asf5-Graphite

Published online by Cambridge University Press:  15 February 2011

R.S. Markiewicz ,
C. Lopatin  and
C. Zahopoulos
R.S. Markiewicz
Affiliation:
Physics Department, Northeastern University, Boston, Massachusetts, and Francis Bitter National Magnet Laboratory, Cambridge, Mass. 02139, USA
C. Lopatin
Affiliation:
Physics Department, Northeastern University, Boston, Massachusetts, and Francis Bitter National Magnet Laboratory, Cambridge, Mass. 02139, USA
C. Zahopoulos
Affiliation:
Physics Department, Northeastern University, Boston, Massachusetts, and Francis Bitter National Magnet Laboratory, Cambridge, Mass. 02139, USA
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Abstract

We find that the carrier concentration in Stage II AsF5- graphite can be varied over a wide range, f≃.30–.46. By studying the Fermi surfaces vs. f via magnetooscillations, we find that the band parameters are essentially unchanged from pure graphite. Thus suggests that all stage two compounds should display a universal behavior as a function of f, and we adduce evidence of this from the literature. We further begin an analysis of extra oscillation frequencies. In AsF5-graphite, mixing frequencies are probably caused by Fermi-level modulation (Vinter-Overhauser effect), while a low frequency (β) is associated with a superlattice.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 20: Symposium H – Intercalated Graphite , 1982 , 135
Copyright
Copyright © Materials Research Society 1983

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References

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