Anomalous influence of an external magnetic field on spin fluctuations in magnetic semiconductors with strong p-d hybridization and the colossal magnetoresistance effect / Volkov A. G.,Povzner A. A. // PHYSICS OF THE SOLID STATE. - 2012. - V. 54, l. 12. - P. 2351-2356.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

The colossal magnetoresistance effect in magnetic semiconductors based on lanthanum manganites has been investigated in terms of the model allowing for the effects of p-d hybridization and electronelectron Coulomb correlations. The influence of an external magnetic field on spin fluctuations has been considered under the conditions where the chemical potential is in a narrow heavy-fermion band formed in the hybridization gap. It has been shown that, in the vicinity of the Curie point T (C), the strong spin anharmonicity leads to an anomalously strong suppression of spin fluctuations by the external magnetic field, a phenomenon contributing significantly to the formation of colossal negative magnetoresistance.

Author keywords:

TRANSPORT; DISORDER

DOI:

10.1134/S1063783412120347

Web of Science ID:

ISI:000312216100002

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	TRANSPORT; DISORDER
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	agvolkov@yandex.ru
ResearcherID-Numbers	Volkov, Arkadij/A-1980-2016 Povzner, Aleksandr/A-4625-2016
ORCID-Numbers	Volkov, Arkadij/0000-0002-6698-0238
Number-of-Cited-References	14
Usage-Count-Since-2013	6
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	052RN