Zobrazeno 1 - 10
of 206
pro vyhledávání: '"d'Aquino, Massimiliano"'
Publikováno v:
Phys. Rev. B 110, 064435 (2024)
We present a computational study of the parametric excitation of spin waves in thin film disks with a mode-resolved approach. The method involves projecting out the time-dependent magnetization, computed using micromagnetics simulations, onto the spa
Externí odkaz:
http://arxiv.org/abs/2404.07561
Modern three-dimensional nanofabrication methods make it possible to generate arbitrarily shaped nanomagnets, including periodic networks of interconnected magnetic nanowires. Structurally similar to optical or acoustic metamaterials, these arrays co
Externí odkaz:
http://arxiv.org/abs/2312.08415
We consider the numerical solution of the inertial version of Landau-Lifshitz-Gilbert equation (iLLG), which describes high-frequency nutation on top of magnetization precession due to angular momentum relaxation. The iLLG equation defines a higher-o
Externí odkaz:
http://arxiv.org/abs/2310.09043
The aim of the paper is to present a novel class of time-dependent controls to realize ultra-fast magnetization switching in nanomagnets driven by spin-torques produced by spin-polarized electric currents. Magnetization dynamics in such systems is go
Externí odkaz:
http://arxiv.org/abs/2310.02070
Autor:
Merbouche, Hugo, Che, Ping, Srivastava, Titiksha, Beaulieu, Nathan, Youssef, Jamal Ben, Muñoz, Manuel, d'Aquino, Massimiliano, Serpico, Claudio, de Loubens, Grégoire, Bortolotti, Paolo, Anane, Abdelmadjid, Demokritov, Sergej O., Demidov, Vladislav E.
We study experimentally the processes of parametric excitation in microscopic magnetically saturated disks of nanometer-thick Yttrium Iron Garnet. We show that, depending on the relative orientation between the parametric pumping field and the static
Externí odkaz:
http://arxiv.org/abs/2306.16094
Three-dimensional magnetic nanostructures have recently emerged as artificial magnetic material types with unique properties bearing potential for applications, including magnonic devices. Interconnected magnetic nanowires are a sub-category within t
Externí odkaz:
http://arxiv.org/abs/2306.00174
Autor:
d'Aquino, Massimiliano, Perna, Salvatore, Pancaldi, Matteo, Hertel, Riccardo, Bonetti, Stefano, Serpico, Claudio
Publikováno v:
Phys. Rev. B 107, 144412 (2023)
Here we report the possibility to excite ultra-short spin waves in ferromagnetic thin-films by using time-harmonic electromagnetic fields with terahertz frequency. Such ultra-fast excitation requires to include inertial effects in the description of
Externí odkaz:
http://arxiv.org/abs/2302.10759
Autor:
Srivastava, Titiksha, Merbouche, Hugo, Yemeli, Igor Ngouagnia, Beaulieu, Nathan, Youssef, Jamal Ben, Munoz, Manuel, Che, Ping, Bortolotti, Paolo, Cros, Vincent, Klein, Olivier, Sangiao, Soraya, De Teresa, Jose Maria, Demokritov, Sergej, Demidov, Vladislav, Anane, Abdelmadjid, Serpico, Claudio, d'Aquino, Massimiliano, de Loubens, Gregoire
We present the parametric excitation of spin-wave modes in YIG micro-disks via parallel pumping. Their spectroscopy is performed using magnetic resonance force microscopy (MRFM), while their spatial profiles are determined by micro-focus Brillouin li
Externí odkaz:
http://arxiv.org/abs/2301.13468
Autor:
Markó, Daniel, Cheenikundil, Rajgowrav, Bauer, Julien, Lenz, Kilian, Chuang, Wan-Chen, Lin, Ko-Wei, Wu, Jong-Ching, d'Aquino, Massimiliano, Hertel, Riccardo, Schmool, David S.
We present a detailed investigation of the magnetization dynamics in Co/Ag nanodots, which due to their size can support standing spin-wave (SSW) modes with complex spectral responses. To interpret the experimentally measured broadband vector network
Externí odkaz:
http://arxiv.org/abs/2211.03042
We present efficient numerical methods for the simulation of small magnetization oscillations in three-dimensional micromagnetic systems. Magnetization dynamics is described by the Landau-Lifshitz-Gilbert (LLG) equation, linearized in the frequency d
Externí odkaz:
http://arxiv.org/abs/2210.16564