Theory of magnons in spin systems with Dzyaloshinskii-Moriya interactionReport as inadecuate




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1 LPTM - Laboratoire de Physique Théorique et Modélisation 2 Surface Physics Division, Faculty of Physics, A. Mickiewicz University, Poznan, Poland Surface Physics Division, Faculty of Physics

Abstract : We study in this paper magnetic properties of a system of quantum Heisenberg spins interacting with each other via a ferromagnetic exchange interaction J and an in-plane Dzyaloshinskii-Moriya interaction D. The non-collinear ground state due to the competition between J and D is determined. We employ a self-consistent Green-function theory to calculate the spin-wave spectrum and the layer magnetizations at finite T in two and three dimensions as well as in a thin film with surface effects. Analytical details and the validity of the method are shown and discussed.

Keywords : Dzyaloshinskii-Moriya Interaction spin-wave theory





Author: Sahbi El-Hog - Hung T. Diep - Henryk Puszkarski -

Source: https://hal.archives-ouvertes.fr/



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