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Fluctuating field model for conduction electron spin resonance in graphite

2004; American Physical Society; Volume: 70; Issue: 12 Linguagem: Inglês

10.1103/physrevb.70.125417

1550-235X

D. L. Huber, R. R. Urbano, M. S. Sercheli, C. Rettori,

Graphite, nuclear technology, radiation studies

We outline a theory for conduction electron-spin resonance (CESR) in highly oriented pyrolytic graphite. The fundamental approximation is to treat the spin-orbit interaction as an effective field. In this approach, the shift in the $g$ factor, which is associated with the mean value of the field, is related to the orbital susceptibility of the electrons. The linewidth comes from fluctuations in the effective field caused by the scattering of the electrons. The theory is used to interpret our CESR measurements.