Phys. Rev. Lett. 102, 247203 (2009) [4 pages]Finite Electric Field Effects in the Large Perpendicular Magnetic Anisotropy Surface Pt/Fe/Pt(001): A First-Principles StudyReceived 4 March 2009; published 18 June 2009 We investigate crystalline magnetic anisotropy in the electric field (EF) for the FePt surface which has a large perpendicular anisotropy, by means of the first-principles approach. Anisotropy is reduced linearly with respect to the inward EF, associated with the induced spin density around the Fe layer. Although the magnetic anisotropy energy (MAE) density reveals large variation around the atoms, the intrinsic contribution to the MAE is found to mainly come from the Fe layer. The surface without the capping Pt layer also shows similar linear dependence. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.247203
DOI:
10.1103/PhysRevLett.102.247203
PACS:
75.30.Gw, 75.70.−i, 75.80.+q
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