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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Suppression of standing spin waves in low-dimensional ferromagnets
Andrea Taroni1, Anders Bergman, Lars Bergqvist
1Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden. andrea.taroni@physics.uu.se
Abstract:
We examine the experimental absence of standing spin wave modes in thin magnetic films, by means of atomistic spin dynamics simulations. Using Co on Cu(001) as a model system, we demonstrate that by increasing the number of layers, the optical branches predicted from adiabatic first-principles calculations are strongly suppressed, in agreement with spin-polarized electron energy loss spectroscopy measurements reported in the literature. Our results suggest that a dynamical analysis of the Heisenberg model is sufficient in order to capture the strong damping of the standing modes.
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