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Tetragonal CuO: End member of the 3d transition metal monoxides

Wolter Siemons, Gertjan Koster, Dave H. A. Blank, Robert H. Hammond, Theodore H. Geballe, and Malcolm R. Beasley
Phys. Rev. B 79, 195122 – Published 22 May 2009
Physics logo See Synopsis: How to make CuO sit up straight

Abstract

Monoclinic CuO is anomalous both structurally as well as electronically in the 3d transition metal oxide series. All the others have the cubic rocksalt structure. Here we report the synthesis and electronic property determination of a tetragonal (elongated rocksalt) 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 TN antiferromagnet.

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  • Received 28 October 2008

DOI:https://doi.org/10.1103/PhysRevB.79.195122

©2009 American Physical Society

Synopsis

Key Image

How to make CuO sit up straight

Published 8 June 2009

CuO in thin-film form could be a prototype material for exploring magnetism that is similar to what is found in high-temperature superconductors.

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Authors & Affiliations

Wolter Siemons1,2, Gertjan Koster1,2,*, Dave H. A. Blank1, Robert H. Hammond2, Theodore H. Geballe2, and Malcolm R. Beasley2

  • 1Faculty of Science and Technology and MESA+Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
  • 2Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA

  • *Corresponding author. gkoster@utwente.nl

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Issue

Vol. 79, Iss. 19 — 15 May 2009

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