2D-ACAR spectra of insulating and superconducting Y-123

An overview of the two-dimensional angular correlation (2D-ACAR) positron annihilation results for the three fundamental phases of YBa 2Cu 3O x, namely, the normal metal, the superconductor and the insulator, is presented. In addition to the c-axis projected momentum density, the recent results for...

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Bibliographic Details
Published in:The Journal of physics and chemistry of solids 1992-12, Vol.53 (12), p.1657-1667
Main Authors: Smedskjaer, L.C., Bansil, A.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Fermi surface
Physics
positron annihilation spectroscopy
Properties of type I and type II superconductors
Superconductivity
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Summary:An overview of the two-dimensional angular correlation (2D-ACAR) positron annihilation results for the three fundamental phases of YBa 2Cu 3O x, namely, the normal metal, the superconductor and the insulator, is presented. In addition to the c-axis projected momentum density, the recent results for the a-axis projection as well as the insulating Y123 are discussed. The experimental results are compared and contrasted with the corresponding band theory predictions as far as possible in order to gain insight into the electronic structure and Fermiology of this archetypal high-T c superconductor.
ISSN:0022-3697
1879-2553
DOI:10.1016/0022-3697(92)90157-9