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
United States. Department of Energy. Office of Scientific and Technical Information - Access Online:
- www.osti.gov
- 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.
- Subject(s):
- 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
View MARC record | catkey: 14392485