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.

–

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