Superconducting coherence peak in the electronic excitations of a single layer cuprate superconductor $Bi_2 Sr_{1.6} La_{0.4} Cu O_{6+δ}$

J. Wei; Y. Zhang; H. W. Ou; B. P. Xie; D. W. Shen; J. F. Zhao; L. X. Yang; M. Arita; K. Shimada; H. Namatame; M. Taniguchi; Y. Yoshida; H. Eisaki; D. L. Feng

doi:10.1103/physrevlett.101.097005

arXiv · 0801.2212

Superconducting coherence peak in the electronic excitations of a single layer cuprate superconductor $Bi_2 Sr_{1.6} La_{0.4} Cu O_{6+δ}$

J. Wei·Y. Zhang·H. W. Ou·B. P. Xie·D. W. Shen·J. F. Zhao·L. X. Yang·M. Arita·K. Shimada·H. Namatame·M. Taniguchi·Y. Yoshida·H. Eisaki·D. L. Feng

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Abstract

Angle resolved photoemission spectroscopy study is reported on a high quality optimally doped Bi2Sr1.6La0.4CuO6+delta high Tc superconductor. In the antinodal region with maximal d-wave gap, the symbolic superconducting coherence peak, which has been widely observed in multi-CuO2-layer cuprate superconductors, is unambiguously observed in a single layer system. The associated peak-dip separation is just about 19 meV, which is much smaller than its counterparts in multi-layered compounds, but correlates with the energy scales of spin excitations in single layer cuprates.

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J. Wei, Y. Zhang, H. W. Ou, B. P. Xie, D. W. Shen, J. F. Zhao, L. X. Yang, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, Y. Yoshida, H. Eisaki, D. L. Feng. 2008-01-15. Superconducting coherence peak in the electronic excitations of a single layer cuprate superconductor $Bi_2 Sr_{1.6} La_{0.4} Cu O_{6+δ}$. https://doi.org/10.1103/physrevlett.101.097005

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