Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111320
Title: Nanoscale Inhomogeneities and Optical Properties of Doped Cuprates
Authors: Moskvin, A. S.
Zenkov, E. V.
Panov, Yu. D.
Issue Date: 2001
Publisher: Elsevier BV
Citation: Moskvin A. S. Nanoscale Inhomogeneities and Optical Properties of Doped Cuprates / A. S. Moskvin, E. V. Zenkov, Yu. D. Panov. — DOI 10.22363/2521-442X-2021-5-2-37-50 // Journal of Luminescence. — 2001. — Vol. 94-95. — P. 163-167.
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. © 2001 Elsevier Science B.V. All rights reserved.
Keywords: CUPRATES
EFFECTIVE MEDIUM
INHOMOGENEITY
OPTICAL CONDUCTIVITY
DOPING (ADDITIVES)
HIGH TEMPERATURE SUPERCONDUCTORS
LIGHT ABSORPTION
MATHEMATICAL MODELS
NANOSTRUCTURED MATERIALS
OPACITY
OPTICAL PROPERTIES
PERMITTIVITY
PHASE SEPARATION
SINGLE CRYSTALS
SURFACE PLASMON RESONANCE
THIN FILMS
VECTORS
OXIDE SUPERCONDUCTORS
URI: http://hdl.handle.net/10995/111320
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 0035702502
ISSN: 0022-2313
DOI: 10.22363/2521-442X-2021-5-2-37-50
metadata.dc.description.sponsorship: We are grateful to N. Loshkareva, Yu. Sukhorukov, K. Kugel, P. Horsch for discussions. The research described in this publication was made possible in part by Award No. REC-005 of the US Civilian Research & Development Foundation for the Independent States of the Former Soviet Union. The authors acknowledge the support from the Russian Ministry of Education, grant E00-3.4-280, and Russian Foundation of Basic Researches, Grant 01-02-96404.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

Files in This Item:
File Description SizeFormat 
2-s2.0-0035702502.pdf336,4 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.