Evolution of charge order topology across a magnetic quantum phase transition in electron-doped cuprates

ORAL

Abstract

Charge order is now accepted as an integral constituent of the phase diagram of cuprate high-temperature superconductors. Unlike nesting-induced Peierls density waves, the charge correlations in the CuO2 planes have been predicted to display a rich momentum space topology depending on the detailed fermiology of the system. However, to date charge order has only been observed along the high-symmetry Cu-O bond directions. Here, using resonant soft X-ray scattering, we investigate the evolution of the full momentum space topology of charge correlations in T’-Ln2CuO4 (Ln=Nd, Pr) as a function of intrinsic electron doping. We report that, upon electron doping the parent Mott insulator, charge correlations first emerge in a hitherto-unobserved form, with full (Cinf) rotational symmetry in momentum-space. At higher doping levels, the orientation of charge correlations is sharply locked to the Cu-O bond high-symmetry directions, restoring a more conventional bidirectional charge order with enhanced correlation lengths. Our charge susceptibility calculations closely reproduce the drastic evolution in the topology of charge correlations across an antiferromagnetic quantum phase transition, highlighting the interplay between spin and charge degrees of freedom in electron-doped cuprates.

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Presenters

  • Min Gu Kang

    • Massachusetts Institute of Technology, Department of Physics
    • Massachusetts Institute of Technology

Authors

  • Min Gu Kang

    • Massachusetts Institute of Technology, Department of Physics
    • Massachusetts Institute of Technology

  • Jonathan Pelliciari

    • Massachusetts Institute of Technology
    • Department of Physics, Massachusetts Institute of Technology

  • Alex Frano

    • Physics, University of California, San Diego
    • Physics, Univ of California - San Diego
    • Physics, University of California San Diego
    • Physics, University of California, Berkeley

  • Nicholas Breznay

    • Physics, Harvey Mudd College
    • Harvey Mudd College
    • Department of Physics, Harvey Mudd College
    • Physics, University of California, Berkeley

  • Enrico Schierle

    • BESSY, Helmholtz-Zentrum Berlin

  • Eugen Weschke

    • BESSY, Helmholtz-Zentrum Berlin

  • Ronny Sutarto

    • Canadian Light Source

  • Feizhou He

    • Canadian Light Source

  • Padraic Shafer

    • Advanced Light Source, Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Laboratory
    • Advanced Light Source

  • Elke Arenholz

    • Advanced Light Source, Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Laboratory
    • Advanced Light Source

  • Mo Chen

    • Physics, University of California, Berkeley

  • Keto Zhang

    • Physics, University of California, Berkeley

  • Alejandro Ruiz

    • Physics, Univ of California - San Diego
    • Department of Physics, University of California, Berkeley
    • Physics, University of California, Berkeley

  • Zeyu Hao

    • Harvard University
    • Physics, University of California, Berkeley

  • Sylvia Lewin

    • Physics, University of California, Berkeley

  • James G. Analytis

    • Physics, University of California, Berkeley
    • University of California, Berkeley
    • Department of Physics, University of California, Berkeley
    • Department of Physics, University of California, Berkeley, California
    • University of California Berkeley

  • Yoshiharu Krockenberger

    • NTT Basic Research Laboratories

  • Hideki Yamamoto

    • NTT Basic Research Laboratories

  • Tanmoy Das

    • Department of Physics, IISc Bangalore
    • Indian Institute of Science, Bangalore
    • Physics, Indian Institute of Science

  • Riccardo Comin

    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology, Department of Physics
    • Department of Physics, Massachusetts Institute of Technology
    • Stuart Blussom Quantum Matter Institute, University of British Columbia