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Antiferromagnetism-superconductivity competition in electron-doped cuprates triggered by oxygen reduction
- Source :
- Physical Review Letters 99, 157002 (2007)
- Publication Year :
- 2007
-
Abstract
- We have performed a systematic angle-resolved photoemission study of as-grown and oxygen-reduced Pr$_{2-x}$Ce$_x$CuO$_4$ and Pr$_{1-x}$LaCe$_{x}$CuO$_4$ electron-doped cuprates. In contrast to the common belief, neither the band filling nor the band parameters are significantly affected by the oxygen reduction process. Instead, we show that the main electronic role of the reduction process is to remove an anisotropic leading edge gap around the Fermi surface. While the nodal leading edge gap is induced by long-range antiferomagnetic order, the origin of the antinodal one remains unclear.<br />Comment: 4 pages, 4 figures
Details
- Database :
- arXiv
- Journal :
- Physical Review Letters 99, 157002 (2007)
- Publication Type :
- Report
- Accession number :
- edsarx.0704.0453
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.99.157002