Zobrazeno 1 - 10
of 509
pro vyhledávání: '"Pereiro M"'
Autor:
Miranda, I. P., Pankratova, M., Weißenhofer, M., Klautau, A. B., Thonig, D., Pereiro, M., Sjöqvist, E., Delin, A., Katsnelson, M. I., Eriksson, O., Bergman, A.
Magnetoelasticity plays a crucial role in numerous magnetic phenomena, including magnetocalorics, magnon excitation via acoustic waves, and ultrafast demagnetization/Einstein-de Haas effect. Despite a long-standing discussion on anisotropy-mediated m
Externí odkaz:
http://arxiv.org/abs/2409.18274
Autor:
Pankratova, M., Miranda, I. P., Thonig, D., Pereiro, M., Sjoqvist, E., Delin, A., Scheid, P., Eriksson, O., Bergman, A.
Publikováno v:
Scientific Reports 14, 8138 (2024)
We study the ultrafast magnetization dynamics of bcc Fe and fcc Co using the recently suggested heat-conserving three-temperature model (HC3TM), together with atomistic spin- and lattice dynamics simulations. It is shown that this type of Langevin-ba
Externí odkaz:
http://arxiv.org/abs/2308.08996
Publikováno v:
Phys. Rev. Research 2, 013092 (2020)
Crystallographic lattice defects strongly influence dynamical properties of magnetic materials at both microscopic and macroscopic length scales. A multi-scale approach to magnetisation dynamics, which is presented in this paper, accurately captures
Externí odkaz:
http://arxiv.org/abs/1910.07807
Autor:
Knut, R., Delczeg-Czirjak, E. K., Jana, S., Shaw, J. M., Nembach, H. T., Kvashnin, Y., Stefaniuk, R., Malik, R. S., Grychtol, P., Zusin, D., Gentry, C., Chimata, R., Pereiro, M., Söderström, J., Turgut, E., Ahlberg, M., Åkerman, J., Kapteyn, H. C., Murnane, M. M., Arena, D. A., Eriksson, O., Karis, O., Silva, T. J.
Ni$_{0.8}$Fe$_{0.2}$ (Py) and Py alloyed with Cu exhibit intriguing ultrafast demagnetization behavior, where the Ni magnetic moment shows a delayed response relative to the Fe, an effect which is strongly enhanced by Cu alloying. We have studied a b
Externí odkaz:
http://arxiv.org/abs/1810.10994
Autor:
Chimata, R., Delczeg-Czirjak, E. K., Chico, J., Pereiro, M., Sanyal, B., Eriksson, O., Thonig, D.
By using a multiscale approach based on first-principles density functional theory combined with atomistic spin dynamics, we investigate the electronic structure and magnetization dynamics of an inverse Heusler and a Heusler compound and their alloys
Externí odkaz:
http://arxiv.org/abs/1802.07195
Autor:
Keshavarz, S., Kontos, S., Wardecki, D., Kvashnin, Y. O., Pereiro, M., Panda, S. K., Sanyal, B., Eriksson, O., Grins, J., Svensson, G., Gunnarsson, K., Svedlindh, P.
Publikováno v:
Phys. Rev. Materials 2, 044005 (2018)
We present a comprehensive study of the magnetic properties of Sr$_{3-x}$Y$_{x}$(Fe$_{1.25}$Ni$_{0.75}$)O$_{7-\delta}$ ($0 \leq x \leq 0.75$). Experimentally, the magnetic properties are investigated using superconducting quantum interference device
Externí odkaz:
http://arxiv.org/abs/1711.06037
Autor:
Söderlind, P., Landa, A., Locht, I. L. M., Åberg, D., Kvashnin, Y., Pereiro, M., Däne, M., Turchi, P. E. A., Antropov, V. P., Eriksson, O.
We propose a new efficient permanent magnet, SmCoNiFe3, that is a breakthrough development of the well-known SmCo5 prototype. More modern neodymium magnets of the Nd-Fe-B type have an advantage over SmCo5 because of their greater maximum energy produ
Externí odkaz:
http://arxiv.org/abs/1708.08957
Publikováno v:
J. Phys.: Condens. Matter 31, 415401 (2019)
Multipolaron solutions were studied in the framework of the Holstein one-dimensional molecular crystal model. The study was performed in the continuous limit where the crystal model maps into the nonlinear Schr\"odinger equation for which a new perio
Externí odkaz:
http://arxiv.org/abs/1706.09273
Autor:
Szilva, A., Thonig, D., Bessarab, P. F., Kvashnin, Y. O., Rodrigues, D. C. M., Cardias, R., Pereiro, M., Nordström, L., Bergman, A., Klautau, A. B., Eriksson, O.
Publikováno v:
Phys. Rev. B 96, 144413 (2017)
We show for a simple non-collinear configuration of the atomistic spins (in particular, where one spin is rotated by a finite angle in a ferromagnetic background) that the pairwise energy variation computed in terms of multiple scattering formalism c
Externí odkaz:
http://arxiv.org/abs/1706.06560
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