g-factor of current carriers in pyrolytic carbons with quasi-two-dimensional graphite structure

  • Kotosonov A
  • 3


    Mendeley users who have this article in their library.
  • 13


    Citations of this article.


The measurements of the g-factor in the temperature range from 3.8 to 1000 K have been carried out in highly textured pyrolytic carbons using electron spin resonance (ESR) technique. The main part of the ESR absorption is due to the current carriers whose g-factor has a considerable anisotropy (Δgc) associated with the two-dimensional orbital motion of electrons. The magnitude and temperature dependence of Δgcare determined by the fraction of unpaired electrons occupying states in the vicinity of the contact of the valence and conduction bands. An increase in the concentration of electrically active structure defects or boron admixture in the pyrocarbons results in the Fermi level shift deeper into the valence band and in a drastic drop of Δgc. To explain the Δgcbehavior in pyrocarbons, especially at low temperatures, it is suggested to take into account the effective "smearing" of the density of states in the vicinity of the band contact associated with the carrier scattering by defects. © 1988.

Author-supplied keywords

  • Pyrolytic carbon
  • density of states
  • electron spin resonance
  • g-factor

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • A. S. Kotosonov

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free