Doping and temperature dependence of the mass enhancement observed in the cuprate Bi(2)Sr(2)CaCu(2)O(8+delta).
Doping and temperature dependence of the mass enhancement observed in the cuprate Bi(2)Sr(2)CaCu(2)O(8+delta).
复制标题
在铜酸盐 Bi(2)Sr(2)CaCu(2)O(8 delta) 中观察到的质量增强的掺杂和温度依赖性。
DOI：
--
复制
发表时间：
2001
影响因子：
8.6
通讯作者：
D. Hinks
中科院分区：
文献类型：
--
作者：
P. Johnson;T. Valla;A. Fedorov;Z. Yusof;B. Wells;Q. Li;A. Moodenbaugh;G. Gu;N. Koshizuka;C. Kendziora;S. Jian;D. Hinks
高分辨率光电发射用于研究铜酸盐超导体 Bi(2)Sr(2)CaCu(2)O(8+delta) 的电子结构随空穴掺杂和温度的变化。在超导状态的节点线中的能带色散中观察到的扭结与在中子散射中观察到的谐振模式的耦合相关。从测量的自能实部可以提取耦合常数，该常数在欠掺杂区域中最大，然后连续减小到过掺杂区域中。
High-resolution photoemission is used to study the electronic structure of the cuprate superconductor, Bi(2)Sr(2)CaCu(2)O(8+delta), as a function of hole doping and temperature. A kink observed in the band dispersion in the nodal line in the superconducting state is associated with coupling to a resonant mode observed in neutron scattering. From the measured real part of the self-energy it is possible to extract a coupling constant which is largest in the underdoped regime, then decreasing continuously into the overdoped regime.