Scaling of magnetoresistance of carbon nanomaterials in Mott-type hopping conductivity region View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2008-07

AUTHORS

S. V. Demishev, A. D. Bozhko, V. V. Glushkov, E. A. Kataeva, A. G. Lyapin, E. D. Obraztsova, T. V. Ishchenko, N. A. Samarin, N. E. Sluchanko

ABSTRACT

A method for analyzing data on Mott hopping conduction in a magnetic field, ρ ∼ exp[(T0/T)α], based on scaling relation ln[ρ(H)/ρ(0)] = (T0/T)αF(H/T) for the spin-polarized contribution to the magnetore-sistance is proposed. This general approach is tested for a carbon nanomaterial synthesized from single-wall carbon nanotubes under high pressure (up to 7 GPa). The experiments confirmed the theoretical predictions over the temperature range 1.8–12.0 K in a magnetic field of up to 70 kOe and made it possible to correctly determine all parameters of the localized states involved in the model. The experimental data obtained for carbon nanomaterials synthesized from single-wall carbon nanotubes and a mixture of C2N fullerenes indicate the possible renormalization of the magnetic moment of electrons involved in hopping transport. More... »

PAGES

1386-1391

Journal

TITLE

Physics of the Solid State

ISSUE

7

VOLUME

50

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s1063783408070329

DOI

http://dx.doi.org/10.1134/s1063783408070329

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1003398055


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