中国物理B ›› 2025, Vol. 34 ›› Issue (7): 77404-077404.doi: 10.1088/1674-1056/addcc6
Hao Chen(陈浩)1,2,†, Jumin Shi(史聚民)1,2,†, Xiangyu Luo(罗翔宇)1, Yinghao Li(李颖昊)1,2, Yiwen Chen(陈逸雯)1,2, Chaohui Yin(殷超辉)1, Yingjie Shu(束英杰)1,2, Jiuxiang Zhang(张九相)1,2, Taimin Miao(苗泰民)1,2, Bo Liang(梁波)1,2, Wenpei Zhu(朱文培)1,2, Neng Cai(蔡能)1,2, Xiaolin Ren(任晓琳)1,2, Chengtian Lin(林成天)3, Shenjin Zhang(张申金)4, Zhimin Wang(王志敏)4, Fengfeng Zhang(张丰丰)4, Feng Yang(杨峰)4, Qinjun Peng(彭钦军)4, Zuyan Xu(许祖彦)4, Guodong Liu(刘国东)1,2,5, Hanqing Mao(毛寒青)1,2,5, Xintong Li(李昕彤)1,2,5, Lin Zhao(赵林)1,2,5,‡, and X. J. Zhou(周兴江)1,2,5,§
Hao Chen(陈浩)1,2,†, Jumin Shi(史聚民)1,2,†, Xiangyu Luo(罗翔宇)1, Yinghao Li(李颖昊)1,2, Yiwen Chen(陈逸雯)1,2, Chaohui Yin(殷超辉)1, Yingjie Shu(束英杰)1,2, Jiuxiang Zhang(张九相)1,2, Taimin Miao(苗泰民)1,2, Bo Liang(梁波)1,2, Wenpei Zhu(朱文培)1,2, Neng Cai(蔡能)1,2, Xiaolin Ren(任晓琳)1,2, Chengtian Lin(林成天)3, Shenjin Zhang(张申金)4, Zhimin Wang(王志敏)4, Fengfeng Zhang(张丰丰)4, Feng Yang(杨峰)4, Qinjun Peng(彭钦军)4, Zuyan Xu(许祖彦)4, Guodong Liu(刘国东)1,2,5, Hanqing Mao(毛寒青)1,2,5, Xintong Li(李昕彤)1,2,5, Lin Zhao(赵林)1,2,5,‡, and X. J. Zhou(周兴江)1,2,5,§
摘要: The doping evolution of the nodal electron dynamics in the trilayer cuprate superconductor $\mathrm{Bi_{2}Sr_{2}Ca_{2}Cu_{3}O_{10+\delta}}$ (Bi2223) is investigated using high-resolution laser-based angle-resolved photoemission spectroscopy (ARPES). Bi2223 single crystals with different doping levels are prepared by controlled annealing, which cover the underdoped, optimally-doped and overdoped regions. The electronic phase diagram of Bi2223 is established which describes the $T_{\rm c}$ dependence on the sample doping level. The doping dependence of the nodal Fermi momentum for the outer (OP) and inner (IP) CuO$_2$ planes is determined. Charge distribution imbalance between the OP and IP CuO$_2$ planes is quantified, showing enhanced disparity with increasing doping. Nodal band dispersions demonstrate a prominent kink at $\sim94$ meV in the IP band, attributed to the unique Cu coordination in the IP plane, while a weaker $\sim60$ meV kink is observed in the OP band. The nodal Fermi velocity of both OP and IP bands is nearly constant at $\sim1.62$ eV$\cdot$Å independent of doping. These results provide important information to understand the origin of high $T_{\rm c}$ and superconductivity mechanism in high temperature cuprate superconductors.
中图分类号: (Superconductivity phase diagrams)