Evidence of high-spin Ru and universal magnetic anisotropy in SrRuO3thin films | Zendy

Alexander J. Grutter | Zendy; Franklin J. Wong | Zendy; Elke Arenholz | Zendy; Artūras Vailionis | Zendy; Y. Suzuki | Zendy

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Evidence of high-spin Ru and universal magnetic anisotropy in SrRuO3thin films

Author(s) -

Alexander J. Grutter,

Franklin J. Wong,

Elke Arenholz,

Artūras Vailionis,

Y. Suzuki

Publication year - 2012

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.85.134429

Subject(s) - anisotropy , condensed matter physics , magnetic anisotropy , magnetic moment , materials science , spin (aerodynamics) , physics , magnetic field , magnetization , optics , quantum mechanics , thermodynamics

: We have investigated the origins of enhanced saturated magnetic moment and strong strain-dependent magnetic anisotropy in epitaxial films of the transition-metal oxide SrRuO3. We find evidence for an enhancement of the carrier concentration and the stabilization of high-spin Ru4+. Through x-ray magnetic circular dichroism measurements, we also observe a strain-dependent enhancement of the out-of-plane orbital magnetic moment. Such an enhancement is consistent with the universal out-of-plane anisotropy axis shown to occur in films in a variety of different crystallographic orientations. We explain all these effects in terms of an anisotropic reduction in the crystal field resulting from anisotropically reduced orbital overlap in distorted films.

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