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Title
Japanese: 
English:Optical and magnetic properties of CuMnO2 epitaxial thin films with a delafossite-derivative structure 
Author
Japanese: 平賀 広貴, 福村 知昭, 大友 明, 牧野 哲征, 大久保 昭, 木村 久道, 川崎 雅司.  
English: H. Hiraga, T. Fukumura, A. Ohtomo, T. Makino, A. Ohkubo, H. Kimura, M. Kawasaki.  
Language English 
Journal/Book name
Japanese: 
English:Applied Physics Letters 
Volume, Number, Page Vol. 95    No. 3    032109-1-3
Published date July 2009 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL <Go to ISI>://000268405300036
 
DOI https://doi.org/10.1063/1.3186790
Abstract A distorted delafossite CuMnO2, called crednerite, was formed into epitaxial thin films on MgAl2O4 (111) substrates by pulsed laser deposition method. X-ray diffraction revealed that the films had high crystalline quality with epitaxial relationship of CuMnO2 (001)//MgAl2O4 (111) and CuMnO2 [100]//MgAl2O4 < 11-2 >. The ultraviolet-visible optical response revealed a distinct absorption peak at 4.5 eV presumably with excitonic nature and broad peaks at 3.0 and 3.7 eV assignable to O 2p-Mn 3d charge transfer excitation. Small magnetic hysteresis with remanent magnetization of 0.04 muB/Mn was observed below 20 K, representing canted antiferromagnetic spin ordering.

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