Regular Article

Hopping transport of holes in CuCrO2 ceramic samples doped with magnesium

V. G. Kytin$^1$, V. A. Kulbachinskii$^1$, D. Yu. Kondratieva$^1$, A. V. Pavlikov$^2$, A. N. Grigoriev$^3$, A. S. Mankevich$^3$, I. E. Korsakov$^3$

Memoirs of the Faculty of Physics 2018. N 1.

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Annotation

Сonductivity of copper chromite samples doped with magnesium synthesized by solid state method was investigated in wide temperature range. Crystal structure of the samples was determined by X-ray diffraction and confirmed by Raman spectroscopy. P-type of conductivity was confirmed by positive sign of Seebeck coefficient. Analysis of temperature dependencies of conductivity showed that observed conductivity is hopping for magnesium content from 0 to 6 %. Estimates of localization length and density of states at Fermi energy were obtained from temperature dependencies of conductivity.

Received: 2018 January 10

Approved: 2018 February 19

PACS:

72.20.Ee Mobility edges; hopping transport

Authors

V. G. Kytin$^1$, V. A. Kulbachinskii$^1$, D. Yu. Kondratieva$^1$, A. V. Pavlikov$^2$, A. N. Grigoriev$^3$, A. S. Mankevich$^3$, I. E. Korsakov$^3$
$^1$Department of General Nuclear Physics, Faculty of physics, Lomonosov Moscow State University, chair of Low-Temperatures Physics and Superconductivity.\
$^2$Faculty of Physics, Lomonosov Moscow State University, chair of General Physics and Molecular Electronics.\
$^3$Faculty of Chemistry, Lomonosov Moscow State University

Issue 1, 2018

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