Microscopical calculations of the optical properties of Bi2Sr2CaCu2O8

Yu A. Uspenskii, Sergey Rashkeev

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The optical dielectric function ε{lunate}(ω) = ε{lunate}1(ω) + iε{lunate}2(ω), the reflectivity R(ω) and the electron energy-loss spectra (EELS) L(ω) =Im[- 1 ε{lunate}(ω)] are calculated for Bi2Sr2CaCu2O8 in the conventional band approach. The calculated spectra R(ω) and L(ω) are in good accordance with the experiments at high energies 5 ≤ h {combining short solidus overlay}ω≤25 eV. At lower energies we find that the threshold of interband transitions connected with the Bi atoms is positioned at 2.5 eV instead of 4 eV in the experiment. This threshold shift can be caused by the Bi 6p-spin-orbit splitting or by electronic correlations with values of the order of 1-2 eV.

Original languageEnglish
Pages (from-to)373-376
Number of pages4
JournalPhysics Letters A
Volume153
Issue number6-7
Publication statusPublished - 11 Mar 1991
Externally publishedYes

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optical properties
thresholds
solidus
energy dissipation
electron energy
orbits
reflectance
energy
electronics
atoms

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Microscopical calculations of the optical properties of Bi2Sr2CaCu2O8 . / Uspenskii, Yu A.; Rashkeev, Sergey.

In: Physics Letters A, Vol. 153, No. 6-7, 11.03.1991, p. 373-376.

Research output: Contribution to journalArticle

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