CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Disappearance of Superconductivity and a Concomitant Lifshitz Transition in Heavily Overdoped Bi$_2$Sr$_2$CuO$_{6}$ Superconductor Revealed by Angle-Resolved Photoemission Spectroscopy |
Ying Ding1,2, Lin Zhao1**, Hong-Tao Yan1,2, Qiang Gao1,2, Jing Liu1,2, Cheng Hu1,2, Jian-Wei Huang1,2, Cong Li1,2, Yu Xu1,2, Yong-Qing Cai1,2, Hong-Tao Rong1,2, Ding-Song Wu1,2, Chun-Yao Song1,2, Hua-Xue Zhou1, Xiao-Li Dong1,2, Guo-Dong Liu1, Qing-Yan Wang1, Shen-Jin Zhang3, Zhi-Min Wang3, Feng-Feng Zhang3, Feng Yang3, Qin-Jun Peng3, Zu-Yan Xu3, Chuang-Tian Chen3, X. J. Zhou1,2,4,5** |
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 2University of Chinese Academy of Sciences, Beijing 100049 3Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 4Songshan Lake Materials Laboratory, Dongguan 523808 5Collaborative Innovation Center of Quantum Matter, Beijing 100871
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Cite this article: |
Ying Ding, Lin Zhao, Hong-Tao Yan et al 2019 Chin. Phys. Lett. 36 017402 |
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Abstract By partially doping Pb to effectively suppress the superstructure in single-layered cuprate Bi$_2$Sr$_2$CuO$_{6+\delta}$ (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 $T_{\rm c}$ covering from 17 K 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 $\sim$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.
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Received: 26 November 2018
Published: 25 December 2018
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PACS: |
74.25.Jb
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(Electronic structure (photoemission, etc.))
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71.18.+y
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(Fermi surface: calculations and measurements; effective mass, g factor)
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74.72.Dn
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79.60.-i
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(Photoemission and photoelectron spectra)
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Fund: Supported by the National Key Research and Development Program of China under Grant Nos 2016YFA0300300 and 2017YFA0302900, the Strategic Priority Research Program (B) of Chinese Academy of Sciences under Grant Nos XDB07020300 and XDB25000000, the National Basic Research Program of China under Grant No 2015CB921300, the National Natural Science Foundation of China under Grant Nos 11334010 and 11534007, and the Youth Innovation Promotion Association of Chinese Academy of Sciences under Grant No 2017013. |
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