Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Troncoso, Roberto"'
Spin fluctuations in two-dimensional (2D) ferromagnets in the presence of crystalline lattice dislocations are investigated. We show the existence of topologically protected non-propagative modes that localize at dislocations. These in-gap states, co
Externí odkaz:
http://arxiv.org/abs/2410.04044
The interplay of spin and lattice fluctuations in two-dimensional magnets without inversion symmetry is investigated. We find a general form for the magnetoelastic coupling between magnons and existing chiral phonons based on the symmetries of the cr
Externí odkaz:
http://arxiv.org/abs/2405.18644
We propose a magnon-based thermal machine in two-dimensional (2D) magnetic insulators. The thermodynamical cycles are engineered by exposing a magnon spin system to thermal baths at different temperatures and tuning the Dzyaloshinskii-Moriya (DM) int
Externí odkaz:
http://arxiv.org/abs/2404.08153
The effects of disorder on the robustness of topological magnon states of two-dimensional ferromagnetic skyrmions is investigated. It is diagnosed by evaluating a real space topological invariant, the bosonic Bott index (BI). The disorder simultaneou
Externí odkaz:
http://arxiv.org/abs/2404.06541
Autor:
Rohling, Niklas, Troncoso, Roberto E.
Magnon spin transport in a metal-antiferromagnetic insulator-ferromagnetic insulator heterostructure is considered. The spin current is generated via the spin Seebeck effect and in the limit of clean sample where the effects of interface imperfection
Externí odkaz:
http://arxiv.org/abs/2303.12282
Autor:
Saji, Carlos, Troncoso, Roberto E., Carvalho-Santos, Vagson L., Altbir, Dora, Nunez, Alvaro S.
Hopfions are localized and topologically non-trivial magnetic configurations that have received considerable attention in recent years. Through a micromagnetic approach, we analyze the scattering of spin waves by magnetic hopfions. We show that the s
Externí odkaz:
http://arxiv.org/abs/2302.13190
Collinear magnets in honeycomb lattices under the action of time-dependent strains are investigated. Given the limits of high-frequency periodically varying deformations, we derive an effective Floquet theory for spin system that results in the emerg
Externí odkaz:
http://arxiv.org/abs/2208.01170
Autor:
Shiranzaei, Mahroo, Troncoso, Roberto E., Fransson, Jonas, Brataas, Arne, Qaiumzadeh, Alireza
Publikováno v:
New J. Phys. 24, 103009 (2022)
We investigate the effect of magnon-magnon interactions on the dispersion and polarization of magnons in collinear antiferromagnetic (AF) insulators at finite temperatures. In two-sublattice AF systems with either uniaxial or biaxial magnetocrystalli
Externí odkaz:
http://arxiv.org/abs/2108.08374
Publikováno v:
Phys. Rev. B 103, 144422 (2021)
We theoretically study spin pumping from a layered van der Waals antiferromagnet in its canted ground state into an adjacent normal metal. We find that the resulting dc spin pumping current bears contributions along all spin directions. Our analysis
Externí odkaz:
http://arxiv.org/abs/2011.14314
Autor:
Teixeira, Allison W., Castillo-Sepúlveda, Sebastián, Rizzi, Leandro G., Nunez, Alvaro S., Troncoso, Roberto E., Altbir, Dora, Fonseca, Jakson M., Carvalho-Santos, Vagson L.
In this work, the current-induced inertial effects on skyrmions hosted in ferromagnetic systems are studied. {When the dynamics is considered beyond the particle-like description, magnetic skyrmions can deform due to a self-induced field. We perform
Externí odkaz:
http://arxiv.org/abs/2010.01715