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Electron spectroscopy studies of high temperature superconductors [electronic resource] : Y/sub 1/minus/x/Pr/sub x/Ba/sub 2/Cu/sub 3/O/sub 7/minus/delta

Published
Los Alamos, N.M. : Los Alamos National Laboratory, 1989.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 13 : digital, PDF file
Additional Creators
Los Alamos National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We itemize our previous work on high T/sub c/ superconductors, and describe more fully the results of an electron spectroscopy study and impurity Anderson Hamiltonian analysis of the Pr 4f spectrum of Y/sub 1/minus/x/Pr/sub x/Ba/sub 2/Cu/sub 3/O/sub 7/minus/delta/, a system in which superconductivity is quenched as x increases. It has been speculated that Pr has valence 4+, resulting in extra charge in the Cu-O planes, and causing T/sub c/-suppression. We find that the Pr valence is close to 3+ for all x but that there is extensive Pr 4f hybridization with other valence band states. The Cu valence is essentially unchanged with x. From these findings, we speculate that Pr 4f hybridization with other valence band states has enabled Pr spin fluctuations to cause the T/sub c/-suppression. 41 refs., 4 figs.
Report Numbers
E 1.99:la-ur-89-258
E 1.99: conf-8810255-2
conf-8810255-2
la-ur-89-258
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1989.
"la-ur-89-258"
" conf-8810255-2"
"DE89006554"
International symposium on the electronic structure of High /Tc/ superconductors, Rome, Italy, 5 Oct 1988.
Allen, J.W.; Ellis, W.P.; Lee, B.W.; Spicer, W.E.; Maple, M.B.; Yeh, J.J.; Shen, Z.X.; Kang, J.S.; Lindau, I.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14065052