Neutron scattering is used to investigate magnetic structures in quantum materials. The evaluation of measurement data from the 2000s with new methods has provided much deeper insights into a model system. There is a new tool for studying quantum materials.
The simplest model for realizing the Heisenberg quantum spin chain is KCuF 3.
"We carried out the measurements on this simple model material at theISIS spallation neutron source some time ago when I was a postdoc, and we published our results in 2005, 2013 and again in 2021, comparing to new theories each time they became available." A team led by Prof. Alan Tennant and Dr. Allen Scheie has been able to gain deeper insights into the interactions between the spins.
Like a wake.
You push a spin to make it flip. When a ship is sailing through water, it can affect its neighbors and their neighbors.
The function of energy and wavevector is what the tron scattering data is measured for. Using mathematical methods, we were able to map the spatial and temporal development of the spins. The physicists gathered information about interactions between the spin states and their duration and range as well as insights into the so-called quantum coherence.
The work shows a tool box that can be used for the analysis of neutron scattering data.
More information: A. Scheie et al, Quantum wake dynamics in Heisenberg antiferromagnetic chains, Nature Communications (2022). DOI: 10.1038/s41467-022-33571-8 Journal information: Nature Communications Citation: Dynamics in one-dimensional spin chains: A new toolbox for elucidating future quantum materials (2022, October 3) retrieved 3 October 2022 from https://phys.org/news/2022-10-dynamics-one-dimensional-chains-toolbox-elucidating.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
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