Quasi-Two-Dimensional Conductivity and Magnetoconductivity of Graphite-Like Nanosize Crystallites
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Solid State Communications
ISSN: 0038-1098
, E-ISSN: 1879-2766
|
| Output data |
Year: 2006,
Volume: 137,
Number: 11,
Pages: 625-629
Pages count
: 5
DOI:
10.1016/j.ssc.2006.01.003
|
| Tags |
A. Nanostructures, D. Electronic transport, D. Galvanomagnetic effects, D. Quantum localization |
| Authors |
Romanenko A.I.
1
,
Anikeeva O.B.
1
,
Kuznetsov V.L.
2
,
Obrastsov A.N.
3
,
Volkov A.P.
3
,
Garshev A.V.
3
|
| Affiliations |
| 1 |
Nikolaev Institute of Inorganic Chemistry SB RAS
|
| 2 |
Boreskov Institute of Catalysis SB RAS
|
| 3 |
Lomonosov Moscow State University
|
|
Funding (7)
|
1
|
Civilian Research and Development Foundation
|
NO-008-X1
|
|
2
|
Президиум СО РАН
|
113
|
|
3
|
Russian Foundation for Basic Research
|
03-02-16458
|
|
4
|
Council for Grants of the President of the Russian Federation
|
НШ-1042.2003.3
|
|
5
|
Russian Foundation for Basic Research
|
06-02-16005
|
|
6
|
The Ministry of Education and Science of the Russian Federation
|
8234
|
|
7
|
The Ministry of Education and Science of the Russian Federation
|
UR.01.01.186
|
The temperature dependence of electrical conductivity and magnetoconductivity of new type of carbon films composed of nanosize thin graphite-like crystallites were investigated at temperature interval of 4.2–300 K and in the magnetic field range of 0–12 kG at 4.2 K, respectively. The crystallites consist of several (5–50) graphene layers which have predominant orientation perpendicularly to a film surface. At temperature ≤30 K the logarithmic conductivity decreases linearly with temperature. The positive magnetoconductivity of the films was observed in a magnetic field directed perpendicularly to the film surface in all intervals of field values. In magnetic field B≥4 kG the logarithmic asymptotic of conductivity from magnetic field was observed. That is characteristic of the systems with two-dimensional quantum corrections to magnetoconductivity. In a magnetic field directed along a film surface, the crossover from negative to positive magnetoresistivity is observed at B≥8 kG.