Transport effects in single-crystal La0.82Ca0.18MnO3 / Bebenin N. G.,Zainullina R. I.,Bannikova N. S.,Ustinov V. V.,Mukovskii Ya. M. // PHYSICS OF THE SOLID STATE. - 2008. - V. 50, l. 4. - P. 691-695.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

This paper reports experimental data on the temperature dependences of the electrical resistivity, magnetoresistance, thermopower, magnetothermopower, and normal and spontaneous Hall coefficients of the La0.82Ca0.18MnO3 single crystal with a Curie temperature of 180 K. It is shown that, at low temperatures, electrons are the majority carriers. For T < 110 K, the electrical resistivity depends substantially on the position of the magnetization vector with respect to the crystallographic axes, which implies a significant role played by the spin-orbit interaction. For T > 137 K, holes are dominant. In the vicinity of the Curie temperature, electrical conduction is effected primarily by holes activated to the mobility edge. The local activation energy of the resistivity exhibits a critical behavior. The temperature dependence of the local activation energy is determined by spin correlation functions. For T > 240 K, the activation energy does not depend on temperature.

Author keywords:

FLOATING-ZONE GROWTH; MANGANITES; MAGNETORESISTANCE; LA1-XSRXMNO3; LA1-XCAXMNO3; ANISOTROPY; HGCR2SE4

DOI:

10.1134/S106378340804015X

Web of Science ID:

ISI:000255554100015

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	APR
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	FLOATING-ZONE GROWTH; MANGANITES; MAGNETORESISTANCE; LA1-XSRXMNO3; LA1-XCAXMNO3; ANISOTROPY; HGCR2SE4
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	bebenin@imp.uran.ru
ResearcherID-Numbers	Bannikova, Nataly/J-5273-2013 Svetlana, Ahmetzhanova/H-3797-2012 Bebenin, Nikolay/K-6955-2013 Ustinov, Vladimir/G-7501-2011 Zainullina, Rimma/J-4287-2013
ORCID-Numbers	Bannikova, Nataly/0000-0002-8716-5128 Bebenin, Nikolay/0000-0003-2035-6103 Ustinov, Vladimir/0000-0002-5155-7947 Zainullina, Rimma/0000-0002-0353-4775
Number-of-Cited-References	25
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	20
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	296NW