The Origin and Significance of the Phase of out of plane Exchange Coupling

Durie, Alexander (2022). The Origin and Significance of the Phase of out of plane Exchange Coupling. PhD thesis The Open University.

DOI: https://doi.org/10.21954/ou.ro.00015118

Abstract

In this work, we study magnetic multilayered systems, discussing in particular the property known as interlayer exchange coupling (IEC). Our work is theoretical, using the method of Tight Binding and Green’s functions to model realistic devices, so that we can demonstrate that our findings should be observed experimentally. We explore how we can manipulate the IEC, in particular its phase. This is an interesting technological prospect, as it means we may be able to alter the magnetic state of a system, making this concept an attractive form of memory in computers owing to its low energy requirements, non-volatility and the fact that it may be used as a form of universal memory. We achieve our goal in manipulating the phase of IEC in two realistic systems and discuss the landscape for further research in the field.

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