利用扫描隧道谱对过掺杂（Bi，Pb）SrCuO超导体中的电子向列相进行研究。

The study of electronic nematicity in an overdoped (Bi, Pb)SrCuO superconductor using scanning tunneling spectroscopy.

作者信息

Zheng Yuan, Fei Ying, Bu Kunliang, Zhang Wenhao, Ding Ying, Zhou Xingjiang, Hoffman Jennifer E, Yin Yi

机构信息

Department of Physics, Zhejiang University, Hangzhou, 310027, China.

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Academy of Science, Beijing, 100190, China.

出版信息

Sci Rep. 2017 Aug 14;7(1):8059. doi: 10.1038/s41598-017-08376-1.

DOI:10.1038/s41598-017-08376-1

PMID:28808301

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5556024/

Abstract

The pseudogap (PG) state and its related intra-unit-cell symmetry breaking remain the focus in the research of cuprate superconductors. Although the nematicity has been studied in BiSrCaCuO, especially underdoped samples, its behavior in other cuprates and different doping regions is still unclear. Here we apply a scanning tunneling microscope to explore an overdoped (Bi, Pb)SrCuO with a large Fermi surface (FS). The establishment of a nematic order and its real-space distribution is visualized as the energy scale approaches the PG.

摘要

赝能隙（PG）态及其相关的晶胞内对称性破缺仍是铜酸盐超导体研究的焦点。尽管已对BiSrCaCuO体系，特别是欠掺杂样品中的向列性进行了研究，但其在其他铜酸盐体系及不同掺杂区域的行为仍不明确。在此，我们应用扫描隧道显微镜来研究具有大费米面（FS）的过掺杂（Bi，Pb）SrCuO体系。随着能标接近PG，向列序的建立及其实空间分布得以可视化。