Superexchange interaction in insulating manganites R(1-x)A(x)MnO(3) (x = 0, 0.5) / Gontchar LE,Nikiforov AE // PHYSICAL REVIEW B. - 2002. - V. 66, l. 1.

ISSN/EISSN:

1098-0121 / нет данных

Type:

Article

Abstract:

Manganites with general formulas RMnO3 and R(0.5)A(0.5)MnO(3), where R3+ is a rare-earth ion, and A(2+) is an alkaline-earth ion, are known as insulating pure or charge ordered compounds at low temperatures with some R and A. In the present work, it is shown how the charge ordering and crystal structure form the orbital structure, which strongly effects the superexchange interaction. An explicit space group and the magnitudes of the distortions of each crystal were used in the calculations. We assume an ideal insulating state of the crystals. The model presented in this work allows one to explain the CE and A magnetic structures in terms of charge and orbital structures using quantitative estimations of the exchange parameters. The model also allows one to find easy axis and noncollinear components of a multisublattice magnetic structure of manganites.

Author keywords:

JAHN-TELLER PHONONS; NEUTRON-DIFFRACTION; DOPED MANGANITES; ROOM-TEMPERATURE; MAGNETIC ORDER; PHASE-DIAGRAM; CRUCIAL ROLE; A-TYPE; CHARGE; LAMNO3

DOI:

10.1103/PhysRevB.66.014437

Web of Science ID:

ISI:000177284900103

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL 1
Publisher	AMERICAN PHYSICAL SOC
Address	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Language	English
Article-Number	014437
Keywords-Plus	JAHN-TELLER PHONONS; NEUTRON-DIFFRACTION; DOPED MANGANITES; ROOM-TEMPERATURE; MAGNETIC ORDER; PHASE-DIAGRAM; CRUCIAL ROLE; A-TYPE; CHARGE; LAMNO3
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Nikiforov, Anatoliy/L-4436-2016 Gonchar, Liudmila/L-6878-2016
ORCID-Numbers	Gonchar, Liudmila/0000-0002-5872-3565
Number-of-Cited-References	43
Usage-Count-Since-2013	4
Journal-ISO	Phys. Rev. B
Doc-Delivery-Number	581HD