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1993 | 84 | 1 | 7-20
Article title

Electronic Structure and Fermiology of High-T_{c} Superconductors

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EN
Abstracts
EN
We briefly discuss some of our recent results in three areas, all related to issues concerning the electronic structure and fermiology of the high-T_{c}'s. (i) First-principles band theory based computations of the electron-positron momentum density relevant for the interpretation of the positron annihilation (2D-ACAR) experiments; results for YBa_{2}Cu_{3}O_{7} are discussed. (ii) Another k-resolved spectroscopy where such first-principles comparisons between the computed and measured spectral intensities have been crucially important is the angle-resolved photoemission experiment; we discuss results for the (001)-surface of YBa_{2}Cu_{3}O_{7} where computations yield considerable insight into the nature and origin of the spectral signal associated with the CuO_{2} plane bands. (iii) The study of effects of substitutions and of oxygen-vacancy disorder in the high-T_{c}'s; here results for the LaSrCuO_{4}, and Ba-K-Bi-O and Ba-Pb-Bi-O systems, with focus on the nature of the van Hove singularity in the vicinity of the Fermi energy are presented.
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EN
Publisher

Year
Volume
84
Issue
1
Pages
7-20
Physical description
Dates
published
1993-07
Contributors
author
  • Department of Physics, Northeastern University, Boston, MA 02115, USA
author
  • Institute of Physics and Nuclear Techniques, AGH, Al. Mickiewicza 30, 30-059 Kraków, Poland
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv84z101kz
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