Electronic structure of hole centers in CuO2 planes of cuprates / Moskvin A. S.,Panov Yu D. // LOW TEMPERATURE PHYSICS. - 2011. - V. 37, l. 3. - P. 261-267.

ISSN/EISSN:

1063-777X / 1090-6517

Type:

Article

Abstract:

A theoretical analysis and a large amount of experimental data indicate that the structure of the valence hole states in doped cuprates is more complicated than assumed in the simple Zhang-Rice singlet model. In fact, we are dealing with a competition between a hybrid Cu 3d-O 2p b(1g) proportional to d(x2-y2)-state and purely oxygen nonbonding states with a(2g)- and e(ux,y) proportional to p(x,y)-symmetries. Thus, as a cluster analog of a Cu3+ ion, the ground state of a non-Zhang-Rice CuO45- hole center of this sort should be described by complicated (1)A(1g)-B-1,3(2g)-E-1,3(u) multiplet with a set of charge, orbital, and spin order parameters, some of which are well known (e. g., spin moment or ``ferromagnetic{''} Ising orbital momentum localized on oxygen ions) while others are unconventional or hidden (e.g., ``antiferromagnetic{''} ordering of Ising orbital momenta localized on four oxygen atoms or a combined spin-orbital-quadrupole ordering). The non-Zhang-Rice CuO45- centers are actually singlet-triplet pseudo-Jahn-Teller centers with strong vibron coupling to the lattice. The complicated structure of the ground-state multiplet of the hole centers shows up in many of the unusual properties of doped cuprates, in particular, their pseudo-gap phase. (C) 2011 American Institute of Physics. {[}doi:10.1063/1.3580606]

Author keywords:

HIGH-TC SUPERCONDUCTORS; X-RAY-SCATTERING; JAHN-TELLER-CENTERS; CHARGE-TRANSFER; COPPER OXIDES; MODEL; EXCITATIONS; SR2CUO2CL2; SYMMETRY; LA2CU1-XLIXO4

DOI:

10.1063/1.3580606

Web of Science ID:

ISI:000289583200012

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAR
Publisher	AMER INST PHYSICS
Address	1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
Language	English
EISSN	1090-6517
Keywords-Plus	HIGH-TC SUPERCONDUCTORS; X-RAY-SCATTERING; JAHN-TELLER-CENTERS; CHARGE-TRANSFER; COPPER OXIDES; MODEL; EXCITATIONS; SR2CUO2CL2; SYMMETRY; LA2CU1-XLIXO4
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
Author-Email	Alexandr.Moskvin@usu.ru
ResearcherID-Numbers	Panov, Yury/M-3617-2016
ORCID-Numbers	Panov, Yury/0000-0001-5751-2400
Funding-Acknowledgement	Russian Foundation for Basic Research (RFFI) {[}08-02-00633, 10-02-96032]
Funding-Text	This work was supported by grant Nos. 08-02-00633 and 10-02-96032 from the Russian Foundation for Basic Research (RFFI).
Number-of-Cited-References	55
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	8
Journal-ISO	Low Temp. Phys.
Doc-Delivery-Number	750YC