Electronic transport in ferromagnetic La1-xSrxMnO3 single-crystal manganites / Bebenin NG,Zainullina RI,Mashkautsan VV,Ustinov VV,Mukovskii YM // PHYSICAL REVIEW B. - 2004. - V. 69, l. 10.

ISSN/EISSN:

1098-0121 / нет данных

Type:

Article

Abstract:

We report results of integrated study of resistivity, magnetoresistance, Hall effect, thermopower, and magnetothermopower in La1-xSrxMnO3 single crystals with x=0.15,0.20,0.25. The focus is on the vicinity of the Curie temperature. It is shown that near T-C where the colossal magnetoresistance is observed the crystals are in insulator state. It is established that the conductivity in the manganites with different level of doping differs in nature. Near T-C, temperature and magnetic-field dependences of resistivity arise due to change of activation energy, which is linear in squared magnetization. The metal-insulator transition in the x=0.20 and 0.25 manganites occurs not at a certain temperature but in a temperature interval about 80 K wide.

Author keywords:

COLOSSAL-MAGNETORESISTANCE MANGANITES; DISORDERED SEMICONDUCTORS; PHASE-DIAGRAM; LOCALIZATION; TRANSITION; CONDUCTION; PEROVSKITES; SEPARATION; LATTICE

DOI:

10.1103/PhysRevB.69.104434

Web of Science ID:

ISI:000220813500072

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	MAR
Publisher	AMERICAN PHYSICAL SOC
Address	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Language	English
Article-Number	104434
Keywords-Plus	COLOSSAL-MAGNETORESISTANCE MANGANITES; DISORDERED SEMICONDUCTORS; PHASE-DIAGRAM; LOCALIZATION; TRANSITION; CONDUCTION; PEROVSKITES; SEPARATION; LATTICE
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Bebenin, Nikolay/K-6955-2013 Ustinov, Vladimir/G-7501-2011 Zainullina, Rimma/J-4287-2013
ORCID-Numbers	Bebenin, Nikolay/0000-0003-2035-6103 Ustinov, Vladimir/0000-0002-5155-7947 Zainullina, Rimma/0000-0002-0353-4775
Number-of-Cited-References	52
Usage-Count-Since-2013	10
Journal-ISO	Phys. Rev. B
Doc-Delivery-Number	812AX