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MA: Fachverband Magnetismus

MA 55: Poster II

MA 55.59: Poster

Freitag, 4. April 2014, 10:30–13:30, P2

Magnetic correlations in an Fe monolayer on Rh(001) — András Deák and •László Szunyogh — Department of Theoretical Physics, Budapest University of Technology and Economics, Budapest, Hungary

Motivated by recent experiment of Takada et al. [1] we studied the magnetic thin film system consisting of a monolayer of Fe deposited on a Rh(001) surface using a classical spin Hamiltonian with parameters obtained from ab initio calculations. The ground state magnetic configuration is estimated using the mean field spin susceptibility and zero-temperature Landau--Lifshitz--Gilbert spin dynamics simulations. We find that model parameters obtained from a ferromagnetic and a disordered local moment reference state result in significantly different configurations, but both show strong frustration and a sensitive dependence on layer relaxations. Our simulations lead to a complex spin-structure different as proposed from SP-STM results, which might be attributed to the influence of multiple-spin interactions missing from our model.

[1] M. Takada, P. L. Gastelois, M. Przybylski, J. Kirschner: A complex magnetic structure of ultrathin Fe films on Rh (001) surfaces J. Magn. Magn. Mater. 329, 95 (2013)