Actions for Universal versus Material-Dependent Two-Gap Behaviors in the High-Tc Cuprates [electronic resource] : Angle-Resolved Photoemission Study of La_2-xSr_xCuO_4

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Universal versus Material-Dependent Two-Gap Behaviors in the High-Tc Cuprates [electronic resource] : Angle-Resolved Photoemission Study of La_2-xSr_xCuO_4

Published
Washington, D.C. : United States. Dept. of Energy, 2010.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators
SLAC National Accelerator Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We have investigated the doping and temperature dependences of the pseudogap/superconducting gap in the single-layer cuprate La{sub 2-x}SrₓCuO₄ by angle-resolved photoemission spectroscopy. The results clearly exhibit two distinct energy and temperature scales, namely, the gap around (π, 0) of magnitude Δ* and the gap around the node characterized by the d-wave order parameter δ₀, like the double-layer cuprate Bi2212. In comparison with Bi2212 having higher T{sub c}'s, δ₀ is smaller, while δ* and T& are similar. This result suggests that δ* and T* are approximately material-independent properties of a single Cu0₂ plane, in contrast the material-dependent δ₀, representing the pairing strength.
Report Numbers
E 1.99:slac-pub-14035
slac-pub-14035
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Note
Published through SciTech Connect.
06/04/2010.
"slac-pub-14035"
Submitted to Physical Review B ISSN 1098-0121 FT
Yoshida, T.
Funding Information
AC02-76SF00515
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