重掺杂(Bi,Pb)2Sr2CuO6中Eliashberg函数的定量确定及与多声子模式强电子耦合的证据
超导电性
2011-05-24 v1
摘要
我们对重掺杂(Bi,Pb)2Sr2CuO6（Tc>5 K）超导体进行了基于激光的超高分辨率角分辨光电子能谱测量。利用不同温度下准粒子色散细微变化的高精度数据，我们开发了一种通用程序来确定裸带色散并定量提取玻色子谱函数。我们的结果明确表明，70 meV节点扭结源于电子与多声子模式的耦合，即使在重掺杂区域，质量增强因子也高达Lamda=0.42。
引用
@article{arxiv.1002.0120,
title = {Quantitative Determination of Eliashberg Function and Evidence of Strong Electron Coupling with Multiple Phonon Modes in Heavily Over doped (Bi,Pb)2Sr2CuO6},
author = {Lin Zhao and Jing Wang and Junren Shi and Wentao Zhang and Haiyun Liu and Jianqiao Meng and Guodong Liu and Xiaoli Dong and Wei Lu and Guiling Wang and Yong Zhu and Xiaoyang Wang and Qinjun Peng and Zhimin Wang and Shenjin Zhang and Feng Yang and Chuangtian Chen and Zuyan Xu and Xingjiang Zhou},
journal= {arXiv preprint arXiv:1002.0120},
year = {2011}
}
备注
4pages,4figures