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arXiv · 0801.2857

Weak ferromagnetism in Mn nanochains on the CuN surface

A. N. Rudenko·V. V. Mazurenko·V. I. Anisimov·A. I. Lichtenstein
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Abstract

We investigate electronic and magnetic structures of the Mn chains supported on the CuN surface using first-principle LSDA and LDA+U calculations. The isotropic exchange integrals and anisotropic Dzyaloshinskii-Moriya interactions between Mn atoms are calculated using Green function formalism. It is shown that the account of lattice relaxation and on-site Coulomb interaction are important for accurate description of magnetic properties of the investigated nanosystems. We predict a weak ferromagnetism phenomenon in the Mn antiferromagnetic nanochains on the CuN surface. The value of a net magnetic moment and direction of spin canting are calculated. We show that some experimental features may be explained using anisotropic exchange interactions.

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A. N. Rudenko, V. V. Mazurenko, V. I. Anisimov, A. I. Lichtenstein. 2008-01-18. Weak ferromagnetism in Mn nanochains on the CuN surface. https://doi.org/10.1103/physrevb.79.144418

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