Nanoscale inhomogeneities and optical properties of doped cuprates / Moskvin AS,Zenkov EV,Panov YD // JOURNAL OF LUMINESCENCE. - 2001. - V. 94, l. . - P. 163-167.

ISSN/EISSN:

0022-2313 / нет данных

Type:

Article; Proceedings Paper

Abstract:

We propose a new approach to theoretical description of doped HTSC cuprate, assuming phase separation and treating it as inhomogeneous composite material, containing the dielectric and metallic nanoparticles. The formalism of effective medium theory is applied for calculation of dielectric permittivity and optical spectra of Sr-doped La214 system for a broad range of doping concentrations. The model is able to reproduce all essential features of optical conductivity, electron energy-loss function at zero wave vector and transmittance both for thin films and bulk single-crystalline samples. Substantial difference in spectral and doping dependence of optical absorption for the thin-film and bulk samples is easily explained by assuming different shape of metallic and dielectric regions in both materials. New peaks of optical conductivity, that emerge in the infrared range near 0.5 and 1.5 eV upon doping, are attributed to surface plasmon resonances. (C) 2001 Elsevier Science B.V. All rights reserved.

Author keywords:

cuprates; optical conductivity; inhomogeneity; effective medium SUPERCONDUCTORS

DOI:

10.1016/S0022-2313(01)00260-5

Web of Science ID:

ISI:000172944700034

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC
Note	30th International Conference on Dynamical Proces Excited States of Solids, VILLEURBANNE, FRANCE, JUL 01-04, 2001
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	SUPERCONDUCTORS
Research-Areas	Optics
Web-of-Science-Categories	Optics
ResearcherID-Numbers	Panov, Yury/M-3617-2016
ORCID-Numbers	Panov, Yury/0000-0001-5751-2400
Number-of-Cited-References	10
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	4
Journal-ISO	J. Lumines.
Doc-Delivery-Number	505ZD