dc.contributor.author | Zelenskiy, Andrey | |
dc.date.accessioned | 2023-08-30T17:15:07Z | |
dc.date.available | 2023-08-30T17:15:07Z | |
dc.date.issued | 2023-08-30 | |
dc.identifier.uri | http://hdl.handle.net/10222/82877 | |
dc.description | Competing interactions have long been recognized as a fundamental mechanism driving the emergence of complex phases in a wide range of physical systems. In magnetic systems, these competitions arise from the geometry of the underlying lattice and manifest as geometric frustration or various spin-orbit coupling effects. A prototypical example of geometrically frustrated systems is the antiferromagnetic kagome lattice. Although the exotic properties of the 2D kagome layers have been investigated extensively over the years, a relatively small number of studies considered the effects of a 3D stacking.
The theoretical results reported here are relevant to a number of known magnetic compounds with the AB-stacked kagome structure. Throughout this work, we refer to potential experiments that may verify our predictions. We hope that the present study would lead to further theoretical and experimental investigations of these fascinating systems. | en_US |
dc.description.abstract | This work concerns the magnetic properties of AB-stacked kagome compounds. The analysis is performed starting with a derivation of a spin Hamiltonian from symmetry principles.The resulting magnetic model exhibits a self-duality property: different sets of model parameters are related to each other through changes of the reference frame. By exploiting these relationships, we provide a very general description of the magnetic properties of AB-stacked kagome lattices, including a detailed classification of possible magnetic phases. Some of the phases correspond to magnetic ground states in known compounds, such as Mn3X systems, where X={Sn, Ge, Ga}. To aid the experiments and resolve recent controversies in the literature, we investigate the effects of the magnetic anisotropy in these structures and provide analytical solutions for changes in the spin configurations induced by these interactions. Finally, we study a more exotic set of phases, where the spin structure consists of irregular Ising-like patterns. | en_US |
dc.language.iso | en | en_US |
dc.subject | geometric frustration | en_US |
dc.subject | magnetic phases | en_US |
dc.subject | magnetism | en_US |
dc.title | Magnetic Properties of AB-Stacked Kagome Lattice Crystals: Symmetry, Order and Duality | en_US |
dc.type | Thesis | en_US |
dc.date.defence | 2023-08-28 | |
dc.contributor.department | Department of Physics & Atmospheric Science | en_US |
dc.contributor.degree | Doctor of Philosophy | en_US |
dc.contributor.external-examiner | Oleg Tchernyshyov | en_US |
dc.contributor.graduate-coordinator | Daniel Labrie | en_US |
dc.contributor.thesis-reader | Andrew Rutenberg | en_US |
dc.contributor.thesis-reader | Kimberley Hall | en_US |
dc.contributor.thesis-supervisor | Theodore Monchesky | en_US |
dc.contributor.thesis-supervisor | Martin Plumer | en_US |
dc.contributor.ethics-approval | Not Applicable | en_US |
dc.contributor.manuscripts | Yes | en_US |
dc.contributor.copyright-release | No | en_US |