Nanoscale phase separation in La0.7Ca0.3MnO3 films: evidence for texture-driven optical anisotropy / Moskvin AS,Zenkov EV,Sukhorukov YP,Mostovshchikova EV,Loshkareva NN,Kaul AR,Gorbenko OY // JOURNAL OF PHYSICS-CONDENSED MATTER. - 2003. - V. 15, l. 17. - P. 2635-2643.

ISSN/EISSN:

0953-8984 / 1361-648X

Type:

Article

Abstract:

The infrared optical absorption (0.1 eV < homega < 1.5 eV) in La0.7Ca0.3MnO3 films on LaAlO3 substrates exhibits a drastic temperature evolution of the spectral weight, evidencing an insulator-to-metal transition. Single-crystal films were found to reveal strong linear dichroism with anomalous spectral oscillations and fairly weak temperature dependence. Starting from the concept of phase separation, we develop an effective medium model to account for these effects. The optical anisotropy of the films is attributed to the texturization of the ellipsoidal inclusions of the quasimetal phase caused by a mismatch of the film and substrate and the twin texture of the latter.

Author keywords:

THIN-FILMS; GIANT-MAGNETORESISTANCE; LANTHANUM MANGANITES; CONDUCTIVITY; SPECTRA; LA1-XSRXMNO3

DOI:

10.1088/0953-8984/15/17/317

Web of Science ID:

ISI:000183071400021

Соавторы в МНС:

—

Другие поля

Поле	Значение
Month	MAY 7
Publisher	IOP PUBLISHING LTD
Address	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
Language	English
Article-Number	PII S0953-8984(03)58814-2
EISSN	1361-648X
Keywords-Plus	THIN-FILMS; GIANT-MAGNETORESISTANCE; LANTHANUM MANGANITES; CONDUCTIVITY; SPECTRA; LA1-XSRXMNO3
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	eugene.zenkov@usu.ru
ResearcherID-Numbers	Mostovshchikova, Elena/J-3623-2013 Loshkareva, Natalia/K-1587-2013 Sukhorukov, Yuri/J-3588-2013
ORCID-Numbers	Mostovshchikova, Elena/0000-0001-8527-3195 Loshkareva, Natalia/0000-0002-1701-8712 Sukhorukov, Yuri/0000-0002-8874-1019
Number-of-Cited-References	28
Usage-Count-Since-2013	2
Journal-ISO	J. Phys.-Condes. Matter
Doc-Delivery-Number	682BW