Critical thickness for itinerant ferromagnetism in ultrathin films of SrRuO3

Xia, Jing and Siemons, W. and Koster, G. and Beasley, M.R. and Kapitulnik, A. (2009) Critical thickness for itinerant ferromagnetism in ultrathin films of SrRuO3. Physical Review B: Condensed matter and materials physics, 79 (14). p. 140407. ISSN 1098-0121

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Abstract:	Ultrathin films of the itinerant ferromagnet SrRuO3 were studied using the transport and magneto-optic polar Kerr effect. We find that below 4 monolayers, the films become insulating and their magnetic character changes as they loose their simple ferromagnetic behavior. We observe a strong reduction in the magnetic moment which for 3 monolayers and below lies in the plane of the film. Exchange-bias behavior is observed below the critical thickness and may point to induced antiferromagnetism in contact with ferromagnetic regions.
Item Type:	Article
Copyright:	© 2009 The American Physical Society
Faculty:	Science and Technology (TNW)
Research Group:	Inorganic Materials Science (IMS)
Link to this item:	http://purl.utwente.nl/publications/61345
Official URL:	http://dx.doi.org/10.1103/PhysRevB.79.140407
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Metis ID: 260421