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Scattering interference signature of a pair density wave state in the cuprate pseudogap phase

Author

Listed:
  • Shuqiu Wang

    (University of Oxford)

  • Peayush Choubey

    (Institut für Theoretische Physik III, Ruhr-Universität Bochum
    Indian Institute of Technology (Indian School of Mines))

  • Yi Xue Chong

    (Cornell University)

  • Weijiong Chen

    (University of Oxford)

  • Wangping Ren

    (University of Oxford)

  • H. Eisaki

    (Institute of Advanced Industrial Science and Tech., Tsukuba)

  • S. Uchida

    (Institute of Advanced Industrial Science and Tech., Tsukuba)

  • Peter J. Hirschfeld

    (University of Florida)

  • J. C. Séamus Davis

    (University of Oxford
    Cornell University
    University College Cork
    Max-Planck Institute for Chemical Physics of Solids)

Abstract

An unidentified quantum fluid designated the pseudogap (PG) phase is produced by electron-density depletion in the CuO2 antiferromagnetic insulator. Current theories suggest that the PG phase may be a pair density wave (PDW) state characterized by a spatially modulating density of electron pairs. Such a state should exhibit a periodically modulating energy gap $${\Delta }_{{{{{{\rm{P}}}}}}}({{{{{\boldsymbol{r}}}}}})$$ Δ P ( r ) in real-space, and a characteristic quasiparticle scattering interference (QPI) signature $${\Lambda }_{{{{{{\rm{P}}}}}}}({{{{{\boldsymbol{q}}}}}})$$ Λ P ( q ) in wavevector space. By studying strongly underdoped Bi2Sr2CaDyCu2O8 at hole-density ~0.08 in the superconductive phase, we detect the 8a0-periodic $${\Delta }_{{{{{{\rm{P}}}}}}}({{{{{\boldsymbol{r}}}}}})$$ Δ P ( r ) modulations signifying a PDW coexisting with superconductivity. Then, by visualizing the temperature dependence of this electronic structure from the superconducting into the pseudogap phase, we find the evolution of the scattering interference signature $$\Lambda ({{{{{\boldsymbol{q}}}}}})$$ Λ ( q ) that is predicted specifically for the temperature dependence of an 8a0-periodic PDW. These observations are consistent with theory for the transition from a PDW state coexisting with d-wave superconductivity to a pure PDW state in the Bi2Sr2CaDyCu2O8 pseudogap phase.

Suggested Citation

  • Shuqiu Wang & Peayush Choubey & Yi Xue Chong & Weijiong Chen & Wangping Ren & H. Eisaki & S. Uchida & Peter J. Hirschfeld & J. C. Séamus Davis, 2021. "Scattering interference signature of a pair density wave state in the cuprate pseudogap phase," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26028-x
    DOI: 10.1038/s41467-021-26028-x
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    References listed on IDEAS

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    3. Z. A. Xu & N. P. Ong & Y. Wang & T. Kakeshita & S. Uchida, 2000. "Vortex-like excitations and the onset of superconducting phase fluctuation in underdoped La2-xSrxCuO4," Nature, Nature, vol. 406(6795), pages 486-488, August.
    4. J. Corson & R. Mallozzi & J. Orenstein & J. N. Eckstein & I. Bozovic, 1999. "Vanishing of phase coherence in underdoped Bi2Sr2CaCu2O8+δ," Nature, Nature, vol. 398(6724), pages 221-223, March.
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