Skyrmion dynamics in quantum Hall ferromagnets
A. Villares Ferrer, A.O. Caldeira
TL;DR
This paper derives a temperature-dependent model for skyrmion dynamics in quantum Hall ferromagnets using a non-linear sigma model and effective Hamiltonian approach.
Contribution
It introduces a novel effective Hamiltonian for skyrmion-magnon interactions and computes transport coefficients via the Feynman-Vernon formalism.
Findings
Temperature influences skyrmion transport properties.
The effective Hamiltonian captures skyrmion-magnon interactions.
Transport coefficients vary with temperature.
Abstract
Exploring a classical solution of the non-linear sigma model for a quantum Hall ferromagnet, a skyrmion-magnon effective hamiltonian is obtained via the collective coordinates method. Using the Feynman-Vernon functional integral formalism for this model we find the temperature dependent transport coefficients which characterize a single skyrmion dynamics.
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Taxonomy
TopicsQuantum and electron transport phenomena · Graphene research and applications · Magnetic properties of thin films