n(k) Structure and Matrix Elements in Photoemission: Results from Insulating Ca₂CuO₂Cl₂

2000/07/14 by F. Ronning, Ronning, F., C. Kim +16
Physics and Astronomy · #Advanced Condensed Matter Physics #FOS: Physical sciences #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.cond-mat/0007252

arxiv created 2000/07/14 · openalex publication_date 2000/07/14 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The photon energy dependence of angle-resolved photoemission data on Ca₂CuO₂Cl₂ is presented, and the role of the matrix element is investigated. It is shown that despite strong variations in the matrix element, the loss in intensity as one crosses the antiferromagnetic zone boundary is a robust feature of the Mott insulator. As expected for a two dimensional system, the dispersion remains independent of the photon energy even when the matrix element does not.

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