Physics – Condensed Matter – Superconductivity
Scientific paper
2009-01-05
Phys. Rev. B 80, 064510 (2009)
Physics
Condensed Matter
Superconductivity
8 pages, 3 figures, added discussions and updated references, accepted for publication in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.80.064510
The electronic structure of cuprate superconductors is studied within the kinetic energy driven superconducting mechanism in the presence of the out-of-plane impurities. With increasing the impurity concentration, although both superconducting coherence peaks around nodal and antinodal regions are suppressed, the position of the leading-edge mid-point of the electron spectrum around the nodal region remains at the same position, while it is shifted towards higher binding energies around the antinodal region, this leads to a strong deviation from the monotonic d-wave superconducting gap in the out-of-plane impurity-controlled cuprate superconductors.
Feng Shiping
Wang Zhi
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