Low dimensional magnetism is a fascinating and complex topic. In their recent work, published in *Journal of Physics: Condensed Matter*, Deák *et al* aim to shed light on the magnetic properties of a monolayer of Fe on top of a Rh(100) surface. Inspired by a previous experimental study, Deák and colleagues combine density functional theory with spin dynamics in an aim to understand the underlying physics behind the experimental results.

(a) The scalar lattice Fourier transform, m(q), of the obtained spin structure for experimental geometry. (b) The maximal eigenvalues, J(q), of the lattice Fourier transform of the calculated exchange tensors for experimental geometry in mRy units, from A Deák et al 2015 J. Phys.: Condens. Matter 27 146003.

This image of the week shows a scalar lattice Fourier transform of the spin structures obtained from one of their simulations. The authors explain their findings in a far more eloquent way than I ever could, so I urge you to check out the full paper here.

Figure: (*a*) The scalar lattice Fourier transform, *m*(**q**), of the obtained spin structure for experimental geometry. (*b*) The maximal eigenvalues, *J*(**q**), of the lattice Fourier transform of the calculated exchange tensors for experimental geometry in mRy units. From: A Deák *et al* 2015 *J. Phys.: Condens. Matter* **27** 146003

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Categories: Journal of Physics: Condensed Matter

Tags: Condensed matter physics, Image of the week, Magnetism, Surfaces