Fermi surface reconstruction in electron-doped cuprates without antiferromagnetic long-range order

ORAL

Abstract

Fermi surface (FS) topology is a fundamental property of metals and superconductors. In electron-doped cuprate Nd2-xCexCuO4 (NCCO), an unexpected FS reconstruction has been observed in optimal- and over-doped regime (x=0.15-0.17) by quantum oscillation measurements (QOM). This is all the more puzzling because neutron scattering suggests that the antiferromagnetic (AFM) long-range order, which is believed to reconstruct the FS, vanishes before x=0.14. To reconcile the conflict, a widely discussed external magnetic field-induced AFM long-range order in QOM explains the FS reconstruction as an extrinsic property. Here, we report angle-resolved photoemission (ARPES) evidence of FS reconstruction in optimal- and over-doped NCCO. The observed FSs are in quantitative agreement with QOM, suggesting an intrinsic FS reconstruction without field. This reconstructed FS, despite its importance as a basis to understand electron-doped cuprates, cannot be explained under the traditional scheme. We discuss the possible origin.

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Presenters

  • Junfeng He

    • Physics, University of Science and Technology of China

Authors

  • Junfeng He

    • Physics, University of Science and Technology of China

  • Costel R. Rotundu

    • Department of Applied Physics, Stanford University
    • Stanford University

  • Mathias Scheurer

    • Department of Physics, Harvard University
    • Harvard University

  • Yu He

    • Stanford University
    • SLAC National Accelerator Laboratory
    • Applied physics, Stanford University
    • Department of Applied Physics, Stanford University

  • Makoto Hashimoto

    • SLAC
    • SLAC national accelerator laboratory
    • SLAC National Accelerator Laboratory
    • Stanford University
    • SSRL, SLAC

  • Kejun Xu

    • Stanford University
    • SLAC National Accelerator Laboratory
    • Applied physics, Stanford University

  • Yao Wang

    • Harvard University
    • Department of Physics, Harvard University
    • Physics, Harvard University

  • Edwin Huang

    • Stanford University
    • SLAC National Accelerator Laboratory

  • Tao Jia

    • Stanford University
    • GLAM, Stanford University

  • Sudi Chen

    • Stanford University
    • SLAC National Accelerator Laboratory
    • Applied physics, Stanford University

  • Brian Moritz

    • Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • SLAC National Accelerator Laboratory
    • SLAC and Stanford University
    • Institute for Materials and Energy Science, Stanford
    • SSRL Materials Science Division, SLAC National Accelerator Laboratory and Stanford University

  • Donghui Lu

    • SLAC National Accelerator Laboratory, Stanford University
    • SLAC national accelerator laboratory
    • SLAC
    • SSRL, SLAC
    • Stanford University
    • SLAC National Accelerator Laboratory

  • Young Sang Lee

    • Department of Applied Physics, Stanford University
    • Stanford University

  • Thomas Devereaux

    • Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • SLAC National Accelerator Laboratory
    • Physics, Stanford University
    • SLAC and Stanford University
    • Institute for Materials and Energy Science, Stanford
    • SIMES, SLAC National Accelerator Lab
    • SLAC National Accelerator Laboratory and Stanford University, Stanford Institute for Materials and Energy Sciences
    • SLAC, Stanford
    • SIMES, SLAC, and Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University

  • Zhixun Shen

    • Stanford University
    • SLAC National Accelerator Laboratory
    • SIMES, SLAC National Accelerator Lab
    • GLAM, Stanford University
    • Applied physics, Stanford University
    • Department of Applied Physics, Stanford University