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

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Title
Angle-resolved photoemission spectroscopy of tetragonal CuO: Evidence for intralayer coupling between cupratelike sublattices
Author(s)
Moser S.; Moreschini L.; Yang H.-Y.; Innocenti D.; Fuchs F.; Hansen N.H.; Chang Y.J.; Keun Su Kim; Walter A.L.; Bostwick A.; Rotenberg E.; Mila F.; Grioni M.
Publication Date
2014-10
Journal
PHYSICAL REVIEW LETTERS, v.113, no.18, pp.187001 -
Publisher
AMER PHYSICAL SOC
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.
URI
http://pr.ibs.re.kr/handle/8788114/1554
DOI
10.1103/PhysRevLett.113.187001
ISSN
0031-9007
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > Journal Papers (저널논문)
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