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arXiv · 1612.04147

Theory of magnons in spin systems with Dzyaloshinskii-Moriya interaction

Sahbi El-Hog·Hung T. Diep·Henryk Puszkarski
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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.

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Sahbi El-Hog, Hung T. Diep, Henryk Puszkarski. 2016-12-13. Theory of magnons in spin systems with Dzyaloshinskii-Moriya interaction. https://doi.org/10.1088/1361-648x%2Faa75a4

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