Controlling orbital moment and spin orientation in CoO layers by strain

• Verfasst von: Csiszár, Szilárd István [VerfasserIn]
• Verfasst von: Haverkort, Maurits W. [VerfasserIn]
• Titel: Controlling orbital moment and spin orientation in CoO layers by strain
• Verf.angabe: S.I. Csiszar, M.W. Haverkort, Z. Hu, A. Tanaka, H.H. Hsieh, H.-J. Lin, C.T. Chen, T. Hibma, and L.H. Tjeng
• Fussnoten: Gesehen am 28.11.2017
• Titel Quelle: Enthalten in: De.arxiv.org
• Jahr Quelle: 2005
• Band/Heft Quelle: (2005) Artikel-Nummer 0504519, 5 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565755928

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.