Zobrazeno 1 - 10
of 522
pro vyhledávání: '"Kimel, A. V."'
Finding methods for the most efficient and fastest detection and control of magnetic domains in antiferromagnets is presently among the main challenges of magnetic research at large. We analyse the problem of optical read-out and control of the antif
Externí odkaz:
http://arxiv.org/abs/2403.10129
A pair of circularly polarized laser pulses of opposite helicities are shown to control the route of spin reorientation phase transition in rare-earth antiferromagnetic orthoferrite (Sm$_{0.55}$Tb$_{0.45}$)FeO$_3$. The route can be efficiently contro
Externí odkaz:
http://arxiv.org/abs/2401.15009
It is found that subtle changes in the external magnetic field and temperature result in dramatic changes in the ultrafast response of spins to a femtosecond laser excitation in a ferrimagnetic Gd/FeCo multilayer. A total of six distinct types of spi
Externí odkaz:
http://arxiv.org/abs/2401.10671
While in accordance with Curie's principle, one would intuitively expect that symmetry of the cause has to be found in the symmetry of the effect, ultrafast excitation of matter is able to violate this principle. For instance, it is believed that hea
Externí odkaz:
http://arxiv.org/abs/2311.10173
Autor:
Metzger, Thomas W. J., Grishunin, Kirill A., Reinhoffer, Chris, Dubrovin, Roman M., Arshad, Atiqa, Ilyakov, Igor, de Oliveira, Thales V. A. G., Ponomaryov, Alexey, Deinert, Jan-Christoph, Kovalev, Sergey, Pisarev, Roman V., Katsnelson, Mikhail I., Ivanov, Boris A., van Loosdrecht, Paul H. M., Kimel, Alexey V., Mashkovich, Evgeny A.
Publikováno v:
Nat Commun 15, 5472 (2024)
Understanding spin-lattice interactions in antiferromagnets is one of the most fundamental issues at the core of the recently emerging and booming fields of antiferromagnetic spintronics and magnonics. Recently, coherent nonlinear spin-lattice coupli
Externí odkaz:
http://arxiv.org/abs/2308.01052
The Barnett effect, discovered more than a century ago, describes how an inertial body with otherwise zero net magnetic moment acquires spontaneous magnetization when mechanically spinning. Breakthrough experiments have recently shown that an ultrash
Externí odkaz:
http://arxiv.org/abs/2305.11551
Autor:
Blank, T. G. H., Mashkovich, E. A., Grishunin, K. A., Schippers, C., Logunov, M. V., Koopmans, B., Zvezdin, A. K., Kimel, A. V.
Publikováno v:
Phys. Rev. B 108, 094439 (2023)
It is found that single-cycle THz electromagnetic fields efficiently excite a GHz spin resonance mode in ferrimagnetic Tm$_3$Fe$_5$O$_{12}$, despite the near absence of GHz spectral components in the exciting THz pulse. By analyzing how the efficienc
Externí odkaz:
http://arxiv.org/abs/2305.02971
Autor:
Formisano, F., Gareev, T. T., Khusyainov, D. I., Fedianin, A. E., Dubrovin, R. M., Syrnikov, P. P., Afanasiev, D., Pisarev, R. V., Kalashnikova, A. M., Mentink, J. H., Kimel, A. V.
Publikováno v:
APL Materials 12, 011105 (2024)
Controlled generation of coherent spin waves with highest possible frequencies and the shortest possible wavelengths is a cornerstone of spintronics and magnonics. Here, using the Heisenberg antiferromagnet RbMF$_3$, we demonstrate that laser-induced
Externí odkaz:
http://arxiv.org/abs/2303.06996
Autor:
Khusyainov, D., Gareev, T., Radovskaia, V., Sampathkumar, K., Acharya, S., Šiškins, M., Mañas-Valero, S., Ivanov, B. A., Coronado, E., Rasing, Th., Kimel, A. V., Afanasiev, D.
Publikováno v:
APL Mater 11, 071104 (2023)
CoPS3 stands out in the family of the van der Waals antiferromagnets XPS3 (X=Mn, Ni, Fe, Co) due to the unquenched orbital momentum of the magnetic Co2+ ions which is known to facilitate the coupling of spins to both electromagnetic waves and lattice
Externí odkaz:
http://arxiv.org/abs/2302.12104
Autor:
Blank, T. G. H., Grishunin, K. A., Ivanov, B. A., Mashkovich, E. A., Afanasiev, D., Kimel, A. V.
Publikováno v:
Phys. Rev. Lett. 131, 096701 (2023)
Finding efficient and ultrafast ways to control antiferromagnets is believed to be instrumental in unlocking their potential for magnetic devices operating at THz frequencies. Still, it is challenged by the absence of net magnetization in the ground
Externí odkaz:
http://arxiv.org/abs/2212.09532