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arXiv · 0810.5231

Tetragonal CuO: A new end member of the 3d transition metal monoxides

Wolter Siemons·Gertjan Koster·Dave H. A. Blank·Robert H. Hammond·Theodore H. Geballe·Malcolm R. Beasley
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Abstract

Monoclinic CuO is anomalous both structurally as well as electronically in the 3$d$ transition metal oxide series. All the others have the cubic rock salt structure. Here we report the synthesis and electronic property determination of a tetragonal (elongated rock salt) form of CuO created using an epitaxial thin film deposition approach. In situ photoelectron spectroscopy suggests an enhanced charge transfer gap $Δ$ with the overall bonding more ionic. As an end member of the 3d transition monoxides, its magnetic properties should be that of a high $T_N$ antiferromagnet.

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Wolter Siemons, Gertjan Koster, Dave H. A. Blank, Robert H. Hammond, Theodore H. Geballe, Malcolm R. Beasley. 2008-10-29. Tetragonal CuO: A new end member of the 3d transition metal monoxides. https://doi.org/10.1103/physrevb.79.195122

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