Физика Низких Температур: Том 43, Выпуск 6 (Июнь 2017), c. 884-888    ( к оглавлению , назад )

Weak localization and interaction effects in acceptor graphite intercalation compounds

O.I. Prokopov1, I.V. Ovsiienko1, L.Yu. Matzui1, T.A. Len1, D.D. Naumova2, I.B. Berkutov3, I.G. Mirzoiev3, and F. Le Normand4

1Taras Shevchenko National University of Kyiv, Departments of Physics 64/13 Volodymyrska Str., Kyiv 01601, Ukraine
E-mail: matzui@univ.kiev.ua

2Taras Shevchenko National University of Kyiv, Departments of Chemistry 64/13 Volodymyrska Str., Kyiv 01601, Ukraine

3B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
E-mail: iberkutov@gmail.com

4Institut de Physique et Chimie des Matériaux, 23 rue du Loess BP 43, Strasbourg 67037, France

Received August 12, 2016


The presented work is devoted to investigations of manifestation of quantum effects of weak localization and interaction of charge carriers in electrical conductivity of acceptor graphite intercalation compounds (CICs). As shown by studies intercalation leads to a decrease in the resistivity and to change the resistivity temperature coefficient from negative sign in the source graphite on a positive sign in intercalated graphite. At the low temperature for all GICs specimens the minimum in the temperature dependence of resistivity is observed. In terms of the model of charge carrier’s weak localization and interaction for two-dimensional systems temperature dependence of phase relaxation time, localization radius and charge carriers screening constant for all GICs are estimated.

PACS: 72.20 Ee Mobility edges; hopping transport;
PACS: 72.30.+q High-frequency effects; plasma effects.

Ключевые слова: graphite intercalation compounds, studies intercalation, weak localization.

Published online: April 25, 2017