The singlet-triplet magnetism in the cuprates / Moskvin AS,Ovchinnikov AS // JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - 1998. - V. 186, l. 3. - P. 288-298.

ISSN/EISSN:

0304-8853 / нет данных

Type:

Article

Abstract:

The spin subsystem of the copper oxides within the polar Jahn-Teller CuO4 center model is a two-component spin liquid and corresponds to a singlet-triplet magnet with, in general, multiparametric (non)collinear spin configurations. In the framework of a modified mean field approximation several collinear spin orders are discussed including both quite trivial singlet or triplet states and a purely quantum singlet-triplet mixed state. The spectrum of the elementary excitations is calculated by the Green's function method. We conjecture that charge fluctuations in a singlet-triplet magnet are accompanied by a modulation of the on-site spin density that results in a possibility to observe the charge fluctuations in the inelastic neutron scattering and the spin lattice relaxation experiments. The suggested model represents a new approach to the description of the spin system of the cuprates. (C) 1998 Elsevier Science B.V. All rights reserved.

Author keywords:

copper oxides; singlet-triplet magnet; induced spin fluctuations PHASE; MODEL

DOI:

10.1016/S0304-8853(98)00067-5

Web of Science ID:

ISI:000074508700004

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUL
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	PHASE; MODEL
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Condensed Matter
ResearcherID-Numbers	Ovchinnikov, Alexander/B-9906-2009
ORCID-Numbers	Ovchinnikov, Alexander/0000-0002-1173-9260
Number-of-Cited-References	13
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	1
Journal-ISO	J. Magn. Magn. Mater.
Doc-Delivery-Number	ZX370