Density wave as a probe of the full cuprate phase diagram

Invited

Abstract

In cuprate materials, the strong correlations in proximity to the antiferromagnetic Mott insulating state give rise to an array of unconventional phenomena beyond high temperature superconductivity. Developing a complete description of the ground state evolution is crucial to decoding the complex phase diagram. Here we use the structure of broken translational symmetry, namely d-form factor charge modulations in (Bi,Pb)2(Sr,La)2CuO6+δ, as a probe of the ground state reorganization which occurs at the transition from truncated Fermi arcs to a large Fermi surface. We use real space imaging of local electronic inhomogeneity as a tool to access a range of dopings within each sample, and we firmly establish the spectral gap Δ as a proxy for local hole doping. From the Δ-dependence of the charge modulation wavevector, we discover a commensurate to incommensurate transition that is coincident with the Fermi surface transition from arcs to large hole pocket, demonstrating the qualitatively distinct nature of the electronic correlations governing the two sides of this quantum phase transition. Furthermore, the doping dependence of the incommensurate wavevector on the overdoped side is at odds with a simple Fermi surface driven instability.

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Presenters

  • Jennifer Hoffman

    Physics, Harvard University, Department of Physics, Harvard University, Harvard University, Department of Physics, Harvard University, Cambridge, MA, United States

Authors

  • Jennifer Hoffman

    Physics, Harvard University, Department of Physics, Harvard University, Harvard University, Department of Physics, Harvard University, Cambridge, MA, United States

  • Tatiana Webb

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

  • Michael C Boyer

    Department of Physics, Clark University, Clark University, Physics, Clark University

  • Yi Yin

    Department of Physics, Zhejiang University, Zhejiang University

  • Debanjan Chowdhury

    Physics, MIT, Department of Physics, Massachusetts Institute of Technology, Massachusetts Institute of Technology

  • Yang He

    Department of Physics, Harvard University, Harvard University

  • Takeshi Kondo

    ISSP, University of Tokyo, Institute for Solid State Physics, University of Tokyo, University of Tokyo

  • Tsunehiro Takeuchi

    Toyota Technological Institute, Nagoya University

  • Hiroshi Ikuta

    Department of Materials Physics, Nagoya University, Nagoya University

  • Eric Hudson

    Pennsylvania State University, Department of Physics, Pennsylvania State University

  • Mohammad H Hamidian

    Department of Physics, Harvard University, Harvard University, Department of Physics, Harvard University, Cambridge, MA, United States