Controlling orbital moment and spin orientation in CoO layers by strain

S. I. Csiszar; M. W. Haverkort; Z. Hu; A. Tanaka; H. H. Hsieh; H. -J. Lin; C. T. Chen; T. Hibma; L. H. Tjeng

doi:10.1103/PhysRevLett.95.187205

Controlling orbital moment and spin orientation in CoO layers by strain

Strongly Correlated Electrons 2007-05-23 v1

Authors: S. I. Csiszar , M. W. Haverkort , Z. Hu , A. Tanaka , H. H. Hsieh , H. -J. Lin , C. T. Chen , T. Hibma , L. H. Tjeng

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Abstract

We have observed that CoO films grown on different substrates show dramatic differences in their magnetic properties. Using polarization dependent x-ray absorption spectroscopy at the Co L $_{2,3}$ edges, we revealed that the magnitude and orientation of the magnetic moments strongly depend on the strain in the films induced by the substrate. We presented a quantitative model to explain how strain together with the spin-orbit interaction determine the 3d orbital occupation, the magnetic anisotropy, as well as the spin and orbital contributions to the magnetic moments. Control over the sign and direction of the strain may therefore open new opportunities for applications in the field of exchange bias in multilayered magnetic films.

Keywords

orbital moment spin orientation CoO films strain engineering X-ray absorption spectroscopy magnetic anisotropy exchange bias

Cite

@article{arxiv.cond-mat/0504519,
  title  = {Controlling orbital moment and spin orientation in CoO layers by strain},
  author = {S. I. Csiszar and M. W. Haverkort and Z. Hu and A. Tanaka and H. H. Hsieh and H. -J. Lin and C. T. Chen and T. Hibma and L. H. Tjeng},
  journal= {arXiv preprint arXiv:cond-mat/0504519},
  year   = {2007}
}

Controlling orbital moment and spin orientation in CoO layers by strain

Abstract

Keywords

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