Absence of polaron conductivity in La0.8Ba0.2MnO3 / Arsenov AA,Bebenin NG,Gaviko VS,Mashkautsan VV,Mukovskii YM,Shulyatev DA,Ustinov VV,Zainullina RI,Adams CP,Lynn JW // PHYSICA STATUS SOLIDI A-APPLIED RESEARCH. - 2002. - V. 189, l. 3. - P. 673-676.

ISSN/EISSN:

0031-8965 / нет данных

Type:

Article; Proceedings Paper

Abstract:

Hall effect and inelastic neutron scattering measurements have been carried out to study the properties of a La0.8Ba0.2MnO3 single crystal grown by the floating zone method. The Hall effect measurements give evidence for a mobility edge that dominates conduction, which implies that the localized e, electrons play an insignificant role. This result is in agreement with the neutron data which shows no central peak in the magnetic fluctuation spectrum below the Curie temperature, a feature associated with polaron formation in La1-xCaxMnO3 and La1-xSrxMnO3 manganites. In the vicinity of the Curie temperature, the change in the resistivity and in the normal and anomalous Hall coefficients of La0.8Ba0.2MnO3 is due to the change in the concentration of holes activated by the mobility edge.

Author keywords:

TRANSITION; MANGANITES; TRANSPORT

DOI:

10.1002/1521-396X(200202)189:3

Web of Science ID:

ISI:000174283500012

Соавторы в МНС:

—

Другие поля

Поле	Значение
Month	FEB 23
Note	1st Seeheim Conference on Magnetism (SCM2001), SEEHEIM, GERMANY, SEP 09-13, 2001
Publisher	WILEY-V C H VERLAG GMBH
Address	PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
Language	English
Keywords-Plus	TRANSITION; MANGANITES; TRANSPORT
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
ResearcherID-Numbers	Shulyatev, Dmitry/M-7278-2014 Ustinov, Vladimir/G-7501-2011 Bebenin, Nikolay/K-6955-2013 Zainullina, Rimma/J-4287-2013 Gaviko, Vasilii/K-4632-2013
ORCID-Numbers	Shulyatev, Dmitry/0000-0002-7642-0277 Ustinov, Vladimir/0000-0002-5155-7947 Bebenin, Nikolay/0000-0003-2035-6103 Zainullina, Rimma/0000-0002-0353-4775 Gaviko, Vasilii/0000-0002-9841-9293
Number-of-Cited-References	15
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	8
Journal-ISO	Phys. Status Solidi A-Appl. Res.
Doc-Delivery-Number	529CY