AIP Advances (Apr 2017)

Electric field dependence of the giant magnetic anisotropy of Ru monolayer on MgO(001) substrate

  • Y. Kitaoka,
  • H. Imamura

DOI
https://doi.org/10.1063/1.4980054
Journal volume & issue
Vol. 7, no. 4
pp. 045006 – 045006-6

Abstract

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Magnetic anisotropy energy (MAE) of a Ru monolayer on MgO(001) substrate under the application of an electric field is investigated by using first-principles calculations. Owing to the large spin orbit coupling in Ru atoms, both MAE and its rate of change against electric field are about 3 times as large as those of an Fe monolayer on MgO(001) substrate. The change rate of MAE of Ru/MgO has an opposite sign to that of Fe/MgO, which originates from the modification of the band structure near the Fermi energy around Γ ¯ point caused by the application of an electric field.