Coexistence of Fermi arcs and Fermi pockets in a high-Tc copper oxide superconductor

Jianqiao Meng, Guodong Liu, Wentao Zhang, Lin Zhao, Haiyun Liu, Xiaowen Jia, Daixiang Mu, Shanyu Liu, Xiaoli Dong, Jun Zhang, Wei Lu, Guiling Wang, Yong Zhou, Yong Zhu, Xiaoyang Wang, Zuyan Xu, Chuangtian Chen and X. J. Zhou ()
Additional contact information
Jianqiao Meng: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Guodong Liu: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Wentao Zhang: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Lin Zhao: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Haiyun Liu: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Xiaowen Jia: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Daixiang Mu: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Shanyu Liu: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Xiaoli Dong: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Jun Zhang: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Wei Lu: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Guiling Wang: Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
Yong Zhou: Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
Yong Zhu: Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
Xiaoyang Wang: Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
Zuyan Xu: Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
Chuangtian Chen: Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
X. J. Zhou: National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences

Nature, 2009, vol. 462, issue 7271, 335-338

Abstract: Fermi pockets in cuprate superconductors One outstanding puzzle in high-temperature cuprate superconductors relates to the 'Fermi surface pocket' that is expected to emerge when the material is slightly doped or underdoped. Such pockets were recently seen in quantum oscillation measurements. Angle-resolved photoemission (ARPES) measurements reveal Fermi arcs, that is, open-ended gapless sections in the large Fermi surface, rather than the closed loops (Fermi pockets) expected of an ordinary metal, contradicting the quantum oscillation measurements. Meng et al. report ARPES measurements of La-Bi2201 showing the presence of both Fermi pockets and Fermi arcs. This coexistence is surprising since it is not predicted by current theories.

Date: 2009
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DOI: 10.1038/nature08521

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