Normal-state electronic structure in the heavily overdoped regime of Bi1.74 Pb0.38 Sr1.88 Cu O6+δ single-layer cuprate superconductors : An angle-resolved photoemission study
Normal-state electronic structure in the heavily overdoped regime of Bi1.74 Pb0.38 Sr1.88 Cu O6+δ single-layer cuprate superconductors : An angle-resolved photoemission study
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DOI：
10.1103/physrevb.73.144507
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发表时间：
2006-02
影响因子：
3.7
通讯作者：
K. Yang;B. Xie;D. Shen;J. Zhao;H. Ou;J. Wei;S. Wang;Y. Wang;D. Lu;R. He;M. Arita;S. Qiao;A. Ino;H. Namatame;M. Taniguchi;F. Xu;N. Kaneko;H. Eisaki;D. Feng
中科院分区：
文献类型：
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作者：
K. Yang;B. Xie;D. Shen;J. Zhao;H. Ou;J. Wei;S. Wang;Y. Wang;D. Lu;R. He;M. Arita;S. Qiao;A. Ino;H. Namatame;M. Taniguchi;F. Xu;N. Kaneko;H. Eisaki;D. Feng
我们探讨的电子结构中的重过掺杂制度的单层铜酸盐超导体Bi 1.74Pb 0.38Sr 1.88CuO 6 + δ。我们发现节态准粒子行为主要由声子主导，而反节态准粒子线形主要由自旋涨落主导。此外，虽然在非常高的掺杂下，长程自旋涨落减小，但局部磁涨落仍然主导准粒子色散，并且该系统在整个过掺杂区域中表现出奇怪的金属行为。
We explore the electronic structure in the heavily overdoped regime of the single layer cuprate superconductor Bi1.74Pb0.38Sr1.88CuO6+delta. We found that the nodal quasiparticle behavior is dominated mostly by phonons, while the antinodal quasiparticle lineshape is dominated by spin fluctuations. Moreover, while long range spin fluctuations diminish at very high doping, the local magnetic fluctuations still dominate the quasiparticle dispersion, and the system exhibits a strange metal behavior in the entire overdoped regime.