Jack Humphreys
Analytically Predicting the Size of Magnetic Skyrmions in Bulk Materials
“Magnetic skyrmions are stable magnetic patterns within a material, governed by an antisymmetric interaction which gives rise to chiral swirls that can be treated as particles. The characteristics of skyrmions in thin films have been studied, however, there is no analytic theory for the size of skyrmions in bulk materials.
The existing methods to determine the energy of a skyrmion in a thin film will be followed and the results will be reproduced. The existing equation for DMI energy density will then be transformed from a Cartesian to a cylindrical coordinate space. By considering all energy contributions to the skyrmion energy in cylindrical coordinates, an expression for the total energy can be determined. The radius at which this energy is minimised will be found, providing an analytic prediction for the size of skyrmions in bulk materials.”
Jack Humphreys
The University of Newcastle
Jack is a 3rd year undergraduate student from the University of Newcastle studying a combined degree in Physics and Computer Systems Engineering. Through this, he explores his passions in learning how physics phenomena are applied for the benefit of technology and strengthens his coding skills.
Outside of university semesters, he is a research assistant at CSIRO Energy in Newcastle, specialising in data acquisition for solar technologies research. This role sees him using an intimate knowledge of digital instruments to develop hardware-oriented software solutions. His work is currently being used for research within photovoltaics and solar thermal.
Jack aspires to have a future career in research and development, using his skills to create new technology. Outside of study, you can be sure to find him running on the ultimate frisbee field, throwing a disc with mates.
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