Large non-adiabatic hole polarons and matrix element effects in the angle-resolved photoemission spectroscopy of dielectric cuprates / Moskvin AS,Kondrashov EN,Cherepanov VI // PHYSICA B-CONDENSED MATTER. - 2002. - V. 311, l. 3-4. - P. 200-219.

ISSN/EISSN:

0921-4526 / нет данных

Type:

Article

Abstract:

We propose a generalization of the conventional theory based on the assumption of the well-isolated Zhang-Rice (1)A(1g) singlet to be a first electron-removal state in insulating copper oxide. The photohole is assumed to be localized on either small (pseudo) Jahn-Teller (PJT) polaron or large non-adiabatic polaron-enclosed one or four to five CuO4 centers, respectively, with active one-center valent ((1)A(1g)-E-1.3(u)) manifold. In the framework of the cluster model we have performed the model microscopic calculation of the k-dependence of the matrix element effects and photon polarization effects for the angle-resolved photoemission (ARPES) in insulating cuprates like Sr2CuO2Cl2. We show that effects like the ``remnant Fermi surface{''} detected in the ARPES experiment for Ca2CuO2Cl2 may be. in fact, the manifestation of the matrix element effects rather than of the original band-structure Fermi surface or strong antiferromagnetic correlations. The measured dispersion-like features in the low-energy part of the ARPES spectra may be the manifestation of the complex momentum-dependent spectral line shape of the large PJT polaron response, in addition to the dispersion effect for the well-isolated Zhang-Rice singlet in antiferro-magnetic matrix. (C) 2002 Elsevier Science B.V. All rights reserved.

Author keywords:

cuprates; photoelectron spectroscopy; ARPES; polarons SINGLET-TRIPLET MAGNETISM; HIGH-TC SUPERCONDUCTORS; ELECTRON-ENERGY-LOSS; JAHN-TELLER CENTERS; C COPPER OXIDES; SR2CUO2CL2; DISPERSION; SPECTRA; CUO

DOI:

10.1016/S0921-4526(01)01028-6

Web of Science ID:

ISI:000175170700003

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	FEB
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Article-Number	PII S0921-4526(01)01028-6
Keywords-Plus	SINGLET-TRIPLET MAGNETISM; HIGH-TC SUPERCONDUCTORS; ELECTRON-ENERGY-LOSS; JAHN-TELLER CENTERS; C COPPER OXIDES; SR2CUO2CL2; DISPERSION; SPECTRA; CUO
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Number-of-Cited-References	42
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	4
Journal-ISO	Physica B
Doc-Delivery-Number	544QD