Momentum density and 2D-ACAR experiments in YBa sub 2 Cu sub 3 O sub 7 [electronic resource]
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| Online Access: |
Online Access |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Dept. of Defense ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1991.
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| Subjects: |
| Abstract: | We compare measured c-projected 2D-ACAR spectrum from an untwinned single crystal of YBa₂Cu₃O{sub 7-x} with the corresponding band theory predictions. Many different one-dimensional sections through the spectrum are considered, together with the characteristic amplitudes and shapes of the spectral anisotropies, with a focus on identifying and delineating Fermi surface signatures in the spectra. The positron data clearly show several distinct features of the ridge Fermi surface predicted by the band theory, and give an indication of the pillbox Fermi sheet. The good agreement between theory and experiment suggests that the band theory framework based on the local density approximation (LDA) is capable of providing a substantially correct description of the momentum density and Fermiology of the normal ground state electronic structure of YBa₂Cu₃O₇ |
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| Item Description: | Published through the Information Bridge: DOE Scientific and Technical Information. 12/01/1991. "anl/cp-75105" " conf-9108150--6" "DE92007382" 9. international conference on positron annihilation, Szombathely (Hungary), 26-31 Aug 1991. Bansil, A. . Dept. of Physics; Smedskjaer, L.C. |
| Physical Description: | Pages: (10 p) : digital, PDF file. |