Magnetic Bloch Oscillations and domain wall dynamics in a near-Ising ferromagnetic chain
Ursula B. Hansen, Olav F. Syljuasen, Jens Jensen, Turi K. Schaffer, Christopher R. Andersen, Jose A. Rodriguez-Rivera, Niels B. Christensen, and Kim Lefmann
Received Date: 17th June 19
When charged particles in periodic lattices are subjected to a constant electric field, they respond by oscillating. Here we demonstrate that the magnetic analogue of these Bloch oscillations are realised in a one-dimensional ferromagnetic easy axis chain. In this case, the "particle" undergoing oscillatory motion in the presence of a magnetic field is a domain wall. Inelastic neutron scattering reveals three distinct components of the low energy spin-dynamics including a signature Bloch oscillation mode. Using parameter-free theoretical calculations, we are able to account for all features in the excitation spectrum, thus providing detailed insights into the complex dynamics in spin-anisotropic chains.
Read in full at arXiv.
This is an abstract of a preprint hosted on an independent third party site. It
has not been peer reviewed but is currently under consideration at Nature