Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Atxitia U"'
Autor:
Martinez, L. M., Liu, Y., Petrovic, C., Haldar, S., Griepe, T., Atxitia, U., Campbell, M., Pettes, M., Prasankumar, R. P., Santos, E. J. G., Singamaneni, S. R., Padmanabhan, P.
We utilize ultrafast photoexcitation to drive coherent lattice oscillations in the layered ferrimagnetic crystal Mn3Si2Te6, which significantly stiffen below the magnetic ordering temperature. We suggest that this is due to an exchange-mediated contr
Externí odkaz:
http://arxiv.org/abs/2308.14931
The experimental discovery of single-pulse ultrafast magnetization switching in ferrimagnetic alloys, such as GdFeCo and MnRuGa, opened the door to a promising route toward faster and more energy efficient data storage. A recent semi-phenomenological
Externí odkaz:
http://arxiv.org/abs/2307.13522
The discovery of current-induced spin-orbit torque (SOT) orthogonal reorientation, also known as orthogonal switching, of metallic Mn$_2$Au and CuMnAs has opened the door for ultrafast writing of an antiferromagnet (AFM). Phenomenological theory pred
Externí odkaz:
http://arxiv.org/abs/2207.09563
Publikováno v:
Phys. Rev. B 105, 104432, (2022)
Both helicity-independent and helicity-dependent all-optical switching processes driven by single ultrashort laser pulse have been experimentally demonstrated in ferrimagnetic alloys as GdFeCo. Although the switching has been previously reproduced by
Externí odkaz:
http://arxiv.org/abs/2203.15460
Autor:
Thielemann-Kühn, N., Amrhein, T., Bronsch, W., Jana, S., Pontius, N., Engel, R. Y., Miedema, P. S., Legut, D., Carva, K., Atxitia, U., van Kuiken, B. E., Teichmann, M., Carley, R. E., Mercadier, L., Yaroslavtsev, A., Mercurio, G., Guyader, L. Le, Agarwal, N., Gort, R., Scherz, A., Dziarzhytski, S., Brenner, G., Pressacco, F., Wang, R., Schunck, J. O., Sinha, M., Beye, M., Chiuzbăian, G. S., Oppeneer, P. M., Weinelt, M., Schüßler-Langeheine, C.
A change of orbital state alters the coupling between ions and their surroundings drastically. Orbital excitations are hence key to understand and control interaction of ions. Rare-earth (RE) elements with strong magneto-crystalline anisotropy (MCA)
Externí odkaz:
http://arxiv.org/abs/2106.09999
Autor:
Jakobs, F., Atxitia, U.
Single femtosecond pulse toggle switching of ferrimagnetic alloys is an essential building block for ultrafast spintronics. Very different element-specific demagnetization dynamics is believed to be a hard limit for switching in ferrimagnets. This su
Externí odkaz:
http://arxiv.org/abs/2106.10111
Magnetic solitons offer functionalities as information carriers in multiple spintronic and magnonic applications. However, their potential for nanoscale energy transport has not been revealed. Here we demonstrate that antiferromagnetic solitons, e.g.
Externí odkaz:
http://arxiv.org/abs/2106.05804
Autor:
Ellis, M. O. A., Evans, R. F. L., Ostler, T. A., Barker, J., Atxitia, U., Chubykalo-Fesenko, O., Chantrell, R. W.
The Landau-Lifshitz (LL) equation, originally proposed at the macrospin level, is increasingly used in Atomistic Spin Dynamic (ASD) models. The models are based on a spin Hamiltonian featuring atomic spins of fixed length, with the exchange introduce
Externí odkaz:
http://arxiv.org/abs/1505.07367
Autor:
Hinzke, D., Atxitia, U., Carva, K., Nieves, P., Chubykalo-Fesenko, O., Oppeneer, P. M., Nowak, U.
A hierarchical multiscale approach to model the magnetization dynamics of ferromagnetic ran- dom alloys is presented. First-principles calculations of the Heisenberg exchange integrals are linked to atomistic spin models based upon the stochastic Lan
Externí odkaz:
http://arxiv.org/abs/1504.00199
Publikováno v:
Phys. Rev. B 91, 144425 (2015)
Atomistic spin model simulations are immensely useful in determining temperature dependent magnetic prop- erties, but are known to give the incorrect dependence of the magnetization on temperature compared to exper- iment owing to their classical ori
Externí odkaz:
http://arxiv.org/abs/1409.7397