Magnetic anisotropy of single 3d spins on CuN surface
A. B. Shick (1), F. M\'aca (1), A. I. Lichtenstein (2) ((1) Institute, of Physics ASCR, Prague, Czech Republic; (2) University of Hamburg, Germany)
TL;DR
This study uses first-principles calculations to analyze the magnetic anisotropy of single Mn and Fe atoms on a CuN surface, revealing their easy magnetization directions and the local origin of anisotropy.
Contribution
It provides a detailed computational analysis of magnetic anisotropy energy for single 3d atoms on a surface, aligning with experimental observations.
Findings
Mn and Fe atoms have different easy magnetization directions
Magnetic anisotropy is mainly due to local magnetic moments
Calculated anisotropy constants agree with experiments
Abstract
First-principles calculations of the magnetic anisotropy energy for Mn- and Fe-atoms on CuN/Cu(001) surface are performed making use of the torque method. The easy magnetization direction is found to be different for Mn and Fe atoms in accord with the experiment. It is shown the magnetic anisotropy has a single-ion character and mainly originates from the local magnetic moment of Mn- and Fe-atoms. The uniaxial magnetic anisotropy constants are calculated in reasonable agreement with the experiment.
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