Revised phase diagram of the high-Tc cuprate superconductor Pb-doped Bi2Sr2CaCu2O8+δ revealed by anisotropic transport measurements
Revised phase diagram of the high-Tc cuprate superconductor Pb-doped Bi2Sr2CaCu2O8+δ revealed by anisotropic transport measurements
复制标题
通过各向异性输运测量揭示的高 Tc 铜酸盐超导体 Pb 掺杂 Bi2Sr2CaCu2O8+δ 的修正相图
DOI：
10.1103/physrevb.105.085131
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发表时间：
2022
影响因子：
3.7
通讯作者：
Watanabe Takao
中科院分区：
文献类型：
--
作者：
Harada Keiichi;Teramoto Yuki;Usui Tomohiro;Itaka Kenji;Fujii Takenori;Noji Takashi;Taniguchi Haruka;Matsukawa Michiaki;Ishikawa Hajime;Kindo Koichi;Dessau Daniel S.;Watanabe Takao
虽然可以利用相图来研究高转变温度（高）超导性，但这个问题还没有得到彻底的讨论。在这项研究中，我们阐明了通过系统的各向异性输运测量Pb掺杂的Bi-2212单晶的高铜酸盐的过掺杂侧的相图。我们证明了“弱”赝能隙开放和电子相干性的特征温度在临界掺杂水平上相互交叉，而“强”赝能隙的特征温度在临界掺杂水平以上并入超导涨落的特征温度。我们的研究结果表明了Mottness在高超导电性中的重要性。
Although phase diagrams can be leveraged to investigate high transition temperature (high-) superconductivity, the issue has not been discussed thoroughly. In this study, we elucidate the phase diagram of the overdoped side of high-cuprates via systematic anisotropic transport measurements for Pb-doped Bi-2212 single crystals. We demonstrate that the characteristic temperatures of the “weak” pseudogap opening and electronic coherence cross each other at a critical doping level, while those of the “strong” pseudogap merges into that of superconducting fluctuations above the critical doping level. Our results indicate the importance of Mottness in high-superconductivity.