Particle-hole excitations in insulating antiferromagnet Ca2CuO2Cl2

M. Z. Hasan, E. D. Isaacs, Z. X. Shen, L. L. Miller

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We briefly report results of an x-ray scattering study of particle-hole excitations in a cuprate insulator. The excitation spectrum shows a broad feature around 5.7 eV and a dispersive feature around 2.5 eV energy-loss. The low energy feature disperses upward about 0.8 eV along <110> having momentum-transfers (Q) from (2.1π,2.1π) to (1.2π, 1.2π); whereas, it does not disperse much along <100> in going from (1.42π,0) to (2.85π,0) within the level of energy resolution of 0.56 eV. This dispersive behavior of particle-hole excitations is mostly determined by the underlying strong magnetic correlations.

Original languageEnglish (US)
Pages (from-to)781-782
Number of pages2
JournalPhysica C: Superconductivity and its applications
Issue numberPART 3
StatePublished - 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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