Disappearance of Superconductivity and a Concomitant Lifshitz Transition in Heavily Overdoped Bi2Sr2CuO6 Superconductor Revealed by Angle-Resolved Photoemission Spectroscopy

被引：20

作者：

Ding, Ying ^{[1
,2
]}

Zhao, Lin ^{[1
]}

Yan, Hong-Tao ^{[1
,2
]}

Gao, Qiang ^{[1
,2
]}

Liu, J. Ng ^{[1
,2
]}

Hu, Cheng ^{[1
,2
]}

Huang, Jian-Wei ^{[1
,2
]}

Li, Cong ^{[1
,2
]}

Xu, Yu ^{[1
,2
]}

Cai, Yong-Qing ^{[1
,2
]}

Rong, Hong-Tao ^{[1
,2
]}

Wu, Ding-Song ^{[1
,2
]}

Song, Chun-Yao ^{[1
,2
]}

Zhou, Hua-Xue ^{[1
]}

Dong, Xiao-Li ^{[1
,2
]}

Liu, Guo-Dong ^{[1
]}

Wang, Qing-Yan ^{[1
]}

Zhang, Shen-Jin ^{[3
]}

Wang, Zhi-Min ^{[3
]}

Zhang, Feng-Feng ^{[3
]}

Yang, Feng ^{[3
]}

Peng, Qin-Jun ^{[3
]}

Xu, Zu-Yan ^{[3
]}

Chen, Chuang-Tian ^{[3
]}

Zhou, X. J. ^{[1
,2
,4
,5
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China

[4] Songshan Lake Mat Lab, Dongguan 523808, Peoples R China

[5] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2019年 / 36卷 / 01期

基金：

中国国家自然科学基金;

关键词：

HIGH-TEMPERATURE SUPERCONDUCTORS; ELECTRONIC-STRUCTURE; FERMI ARCS; STATE; TL2BA2CUO6+DELTA; PSEUDOGAP; EVOLUTION;

D O I：

10.1088/0256-307X/36/1/017402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By partially doping Pb to effectively suppress the superstructure in single-layered cuprate Bi2Sr2CuO6+delta (Pb-Bi2201) and annealing them in vacuum or in high pressure oxygen atmosphere, a series of high quality Pb-Bi2201 single crystals are obtained with T-c covering from 17K to non-superconducting in the overdoped region. High resolution angle resolved photoemission spectroscopy measurements are carried out on these samples to investigate the evolution of the Fermi surface topology with doping in the normal state. Clear and complete Fermi surfaces are observed and quantitatively analyzed in all of these overdoped Pb-Bi2201 samples. A Lifshitz transition from hole-like Fermi surface to electron-like Fermi surface with increasing doping is observed at a doping level of similar to 0.35. This transition coincides with the change that the sample undergoes superconducting-to-non-superconducting states. Our results reveal the emergence of an electron-like Fermi surface and the existence of a Lifshitz transition in heavily overdoped Bi2201 samples. This provides important information in understanding the connection between the disappearance of superconductivity and the Lifshitz transition in the overdoped region.

引用

页数：5

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