Paring density waves as the origin of a ring-like rixs profile in bi2sr2cacu2o8+δ

David Dentelski, Emanuele G. Dalla Torre

Research output: Contribution to journalLetterpeer-review


Density modulations in cuprates are widely believed to be a signature of a charge-density-wave (CDW) order that competes with superconductivity. Recently, we used a weak-coupling approach to claim that these modulations are better accounted by the coexistence of a homogeneous d-wave gap and short-ranged pairing density waves (PDW) [1]. The full momentum dependence of the density waves in Bi2Sr2CaCu2O8+δ (Bi2212) was recently explored in a resonant inelastic x-ray (RIXS) experiment that spanned the entire copper-oxide plane [2], in contrast to previous studies which showed only one-dimensional cuts along specific directions. The main result of this experiment was an apparent ‘ring’ charge order in all directions of the copper-oxide plane. Here, we show that our approach captures well this ring-like intensity profile and its correspondence energy dependency. These results are compatible with the interpretation that the density modulations in cuprates have a predominant PDW character.

Original languageEnglish
Article number101001
JournalJournal of Physics Communications
Issue number10
StatePublished - Oct 2021


  • Charge density waves
  • Cuprates
  • Pairing density waves
  • RIXS
  • Superconductivity

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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