Complete mapping of the spin-wave spectrum in vortex state nano-disk
| Autor: | G. de Loubens, Thierry Valet, Nicolas Vukadinovic, Olivier Klein, V. V. Naletov, Boris Taurel |
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| Přispěvatelé: | SPINtronique et TEchnologie des Composants (SPINTEC), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Johannes Gutenberg - Universität Mainz (JGU), Dassault Aviation, Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), V.V.N. acknowledges support from the program CMIRA’Pro of the region Rhone-Alpes and from the Competitive Growth of KFU., Johannes Gutenberg - Universität Mainz = Johannes Gutenberg University (JGU) |
| Rok vydání: | 2016 |
| Předmět: |
Physics
[PHYS]Physics [physics] Phase transition Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Vortex state Spin wave 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Bijection Perpendicular magnetic field 010306 general physics 0210 nano-technology Saturation (chemistry) |
| Zdroj: | SCOPUS10980121-2016-93-18-SID84970990300 Physical Review B: Condensed Matter and Materials Physics (1998-2015) Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2016, 93, pp.184427. ⟨10.1103/PhysRevB.93.184427⟩ SCOPUS24699950-2016-93-18-SID84970990300 Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2016, 93, pp.184427. ⟨10.1103/PhysRevB.93.184427⟩ |
| ISSN: | 1098-0121 1550-235X |
| DOI: | 10.48550/arxiv.1602.06336 |
| Popis: | © 2016 American Physical Society.We report a study on the complete spin-wave spectrum inside a vortex-state nanodisk. Transformation of this spectrum is continuously monitored as the nanodisk becomes gradually magnetized by a perpendicular magnetic field and encounters a second-order phase transition to the uniformly magnetized state. This reveals the bijective relationship that exists between the eigenmodes in the vortex state and the ones in the saturated state. It is found that the gyrotropic mode can be continuously viewed as a uniform phase precession, which uniquely softens (its frequency vanishes) at the saturation field to transform above into the Kittel mode. By contrast, the other spin-wave modes remain finite as a function of the applied field, while their character is altered by level anticrossing. |
| Databáze: | OpenAIRE |
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