Browsing by Author "Rodríguez Suárez, Roberto"
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- ItemAddition and subtraction of spin pumping voltages in magnetic hybrid structures(2014) Azevedo, A.; Rodríguez Suárez, Roberto
- ItemAngular dependence of hysteresis shift in oblique deposited ferromagnetic/antiferromagnetic coupled bilayers(2014) Rodríguez Suárez, Roberto; Michea Mora, Sebastián; Vega Ramírez, Henrry Ariel.
- ItemBulk magnon spin current theory for the longitudinal spin Seebeck effect(2016) Rezende, S.; Rodríguez Suárez, Roberto; Cunha, R.; López Ortiz, J.; Azevedo, A.
- ItemCharacterization of ferromagnetic and antiferromagnetic systems using nitrogen-vacancy center relaxometry(2024) Cabezón Heitzer, Ricardo Javier; Rodríguez Suárez, Roberto; Pontificia Universidad Católica de Chile. Instituto de FísicaRelaxometry 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.
- ItemCompeting spin pumping effects in magnetic hybrid structures(2014) Rodríguez Suárez, Roberto
- ItemCritical thickness investigation of magnetic properties in exchange-coupled bilayers(2011) Rodríguez Suárez, Roberto
- Itemdc effect in ferromagnetic resonance: Evidence of the spin-pumping effect?(2005) Azevedo, A.; Rodríguez Suárez, Roberto
- ItemDefect-induced magnon scattering mechanisms in exchange-coupled bilayers(2016) Gallardo, R.; Rodríguez Suárez, Roberto; Landeros, P.
- ItemDiffusive magnonic spin transport in antiferromagnetic insulators(2016) Rezende, S. M.; Rodríguez Suárez, Roberto; Azevedo, A.
- ItemEffects of second order surface anisotropy in YIG sputtered onto GGG (100) oriented substrate(2019) Oliveira, Alexandre; Chesman, C.; Rodríguez Suárez, Roberto; Da Costa, R. B.; Silva, U. C.; Da Costa, N. P.; Silva, Bruno; Sommer, Rubem Luis
- ItemEfficient spin transport through polyaniline(2017) Rodríguez Suárez, Roberto; Azevedo, A.; Rezende, S.; Felix, J.; Assis, H.; Gomes, J.; Santos, O.; Mendes, J.
- ItemElectrical detection of ferromagnetic resonance in single layers of permalloy : evidence of magnonic charge pumping(2015) Azevedo, A.; Cunha, R. O.; Estrada, F.; Santos, O.; Mendes, J. B. S.; Vilela, L. H.; Rodríguez Suárez, Roberto; Rezende, S. M.
- ItemEnhanced spin pumping damping in yttrium iron garnet/Pt bilayers(2013) Rezende, S.; Rodríguez Suárez, Roberto
- ItemExchange bias through a Cu interlayer in IrMn/Co system(2007) Geshev, J.; Rodríguez Suárez, Roberto
- ItemFerromagnetic resonance dispersion relation of spin valve system(2005) Rodríguez Suárez, Roberto
- ItemFerromagnetic resonance investigation in permalloy magnetic antidot arrays on alumina nanoporous membranes(2014) Rodríguez Suárez, Roberto; Michea Mora, Sebastián
- ItemFerromagnetic resonance investigation of the residual coupling in spin-valve systems(2005) Rodríguez Suárez, Roberto
- ItemFrequency shift of spin waves in tunnel-junction spin-transfer nano-oscillators(2010) Rodríguez Suárez, Roberto
- ItemGiant spin-charge conversion driven by nanoscopic particles of Ag in Pt(2017) Alves, O.; Silva, E.; Gamino, M.; Cunha, R.; Mendes, J.; Rodríguez Suárez, Roberto; Rezende, S.; Azevedo, A.
- ItemInterplay between magnetic interactions in spin-valve structures(2006) Rodríguez Suárez, Roberto
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