Characterization of ferromagnetic and antiferromagnetic systems using nitrogen-vacancy center relaxometry

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dc.catalogadorgjm
dc.contributor.advisorRodríguez Suárez, Roberto
dc.contributor.authorCabezón Heitzer, Ricardo Javier
dc.contributor.otherPontificia Universidad Católica de Chile. Instituto de Física
dc.date.accessioned2024-01-31T13:09:44Z
dc.date.available2024-01-31T13:09:44Z
dc.date.issued2024
dc.date.updated2024-01-29T03:14:00Z
dc.descriptionTesis (Master’s Degree in Physics)--Pontificia Universidad Católica de Chile, 2024.
dc.description.abstractRelaxometry with nitrogen-vacancy (NV) centers in diamond is an innovative and non-invasive technique that has been increasingly used for characterizing magnetic materials. Because of their exceptional quantum coherence and capability to be manipulated optically, it is possible to measure their relaxation time and, from this quantity, probe physical characteristics of the environment. This technique is the so-called called relaxometry. During the last few years, NV centers have been used for measuring magnetic properties in ferromagnetic materials, and a few times for antiferromagnetic systems with easy-axis anisotropy.In this work, we develop a complete theoretical description of NV center relaxometry for several types of magnetic materials (ferromagnetic and antiferromagnetic systems), we indicate what physical parameters can be measured in each situation, when this technique will experimentally work, and how it depends on the sample anisotropy. We found that relaxation rates using ferromagnetic systems peak at certain values of the external magnetic field, where both NV center and sample resonate simultaneously, something that does not happen when using antiferromagnets because of their high resonance frequency. In this way, NV center relaxometry allows us to extract information about the spin waves of the system. Finally, we discuss prospects to non-intrusively probe magnetic properties and phase transitions in ferrimagnetic systems, in triangular-lattice antiferromagnets, such as Cs2CuCl4 and in 2D materials.
dc.fechaingreso.objetodigital2024-01-31
dc.format.extent94 páginas
dc.fuente.origenAutoarchivo
dc.identifier.doi10.7764/TesisUC/FIS/81107
dc.identifier.urihttps://doi.org/10.7764/TesisUC/FIS/81107
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/81107
dc.information.autorucInstituto de Física; Rodríguez Suárez, Roberto; S/I; 1005805
dc.information.autorucInstituto de Física; Cabezón Heitzer, Ricardo Javier; S/I; 1044974
dc.language.isoen
dc.nota.accesoContenido completo
dc.rightsacceso abierto
dc.subject.ddc510
dc.subject.deweyMatemática física y químicaes_ES
dc.titleCharacterization of ferromagnetic and antiferromagnetic systems using nitrogen-vacancy center relaxometry
dc.typetesis de maestría
sipa.codpersvinculados1005805
sipa.codpersvinculados1044974
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