Optical second- and third-harmonic generation on the ferromagnetic semiconductor europium oxide

Optical second- and third-harmonic generation on epitaxial films of the ferromagnetic semiconductor europium oxide reveal selective coupling to the magnetic and crystallographic properties of the compound. Second-harmonic generation couples linearly to the order parameter parametrizing the long-rang...

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Bibliographic Details
Published in:Journal of applied physics 2011-04, Vol.109 (7), p.07C309-07C309-3
Main Authors: Matsubara, Masakazu, Becher, Carsten, Schmehl, Andreas, Mannhart, Jochen, Schlom, Darrell G., Fiebig, Manfred
Format: Article
Language:English
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Summary:Optical second- and third-harmonic generation on epitaxial films of the ferromagnetic semiconductor europium oxide reveal selective coupling to the magnetic and crystallographic properties of the compound. Second-harmonic generation couples linearly to the order parameter parametrizing the long-range ferromagnetic order. In contrast, third-harmonic generation couples to the crystallographic lattice and to the short-range spin-spin correlations manifesting macroscopically as a magnetostrictive effect. These results demonstrate the potential of nonlinear optics for acquiring unique information about the crystallographic, electronic, and magnetic properties of spintronics compounds.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3540685