Angle-resolved photoemission spectroscopy of tetragonal CuO: Evidence for intralayer coupling between cupratelike sublattices

S. Moser, L. Moreschini, H. Y. Yang, D. Innocenti, F. Fuchs, N. H. Hansen, Y. J. Chang, K. S. Kim, A. L. Walter, A. Bostwick, E. Rotenberg, F. Mila, M. Grioni

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14 Citations (Scopus)

Abstract

We investigate by angle-resolved photoemission the electronic structure of in situ grown tetragonal CuO, a synthetic quasi-two-dimensional edge-sharing cuprate. We show that, in spite of the very different nature of the copper oxide layers, with twice as many Cu in the CuO layers of tetragonal CuO as compared to the CuO2 layers of the high-Tc cuprates, the low-energy electronic excitations are surprisingly similar, with a Zhang-Rice singlet dispersing on weakly coupled cupratelike sublattices. This system should thus be considered as a member of the high-Tc cuprate family, with, however, interesting differences due to the intralayer coupling between the cupratelike sublattices.

Original languageEnglish
Article number187001
JournalPhysical review letters
Volume113
Issue number18
DOIs
Publication statusPublished - 2014 Oct 30

Bibliographical note

Publisher Copyright:
© 2014 American Physical Society.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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