Zobrazeno 1 - 10
of 677
pro vyhledávání: '"Nowak U"'
Autor:
Kohlmann, M., Vollroth, L., Jäckel, K., Hovorakova, K., Schmoranzerova, E., Carva, K., Hinzke, D., Nowak, U., Münzenberg, M., Walowski, J.
All-optical helicity-dependent magnetization switching (AO-HDS) is the quickest deterministic technique for data storage by solely using ultrashort laser pulses. Granular high data density magnetic storage media developed for heat-assisted magnetic r
Externí odkaz:
http://arxiv.org/abs/2401.18010
Autor:
Tauchert, S. R., Volkov, M., Ehberger, D., Kazenwadel, D., Evers, M., Lange, H., Donges, A., Book, A., Kreuzpaintner, W., Nowak, U., Baum, P.
Magnetic phenomena are ubiquitous in our surroundings and indispensable for modern science and technology, but it is notoriously difficult to change the magnetic order of a material in a rapid way. However, if a thin nickel film is subjected to ultra
Externí odkaz:
http://arxiv.org/abs/2106.04189
Publikováno v:
Phys. Rev. B 103, 224433 (2021)
Low power spintronic devices based on the propagation of pure magnonic spin currents in antiferromagnetic insulator materials offer several distinct advantages over ferromagnetic components including higher frequency magnons and a stability against d
Externí odkaz:
http://arxiv.org/abs/2105.13653
Publikováno v:
Journal of Physics: Condensed Matter 29, 314003 (2017)
In the spirit of multi-scale modelling magnetization dynamics at elevated temperature is often simulated in terms of a spin model where the model parameters are derived from first principles. While these parameters are mostly assumed temperature-inde
Externí odkaz:
http://arxiv.org/abs/1707.00374
Autor:
John, R., Berritta, M., Hinzke, D., Müller, C., Santos, T., Ulrichs, H., Nieves, P., Walowski, J., Mondal, R., Chubykalo-Fesenko, O., McCord, J., Oppeneer, P. M., Nowak, U., Münzenberg, M.
Publikováno v:
Scientific Reports 7, 4114 (2017)
Manipulation of magnetization with ultrashort laser pulses is promising for information storage device applications. The dynamic of the magnetization response depends on the energy transfer from the photons to the spins during the initial laser excit
Externí odkaz:
http://arxiv.org/abs/1606.08723
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
The exchange bias effect in compensated IrMn3/Co(111) system is studied using multiscale modeling from "ab initio" to atomistic calculations. We evaluate numerically the out-of-plane hysteresis loops of the bi-layer for different thickness of the fer
Externí odkaz:
http://arxiv.org/abs/1305.2308
Magnetic data storage is pervasive in the preservation of digital information and the rapid pace of computer development requires ever more capacity. Increasing the storage density for magnetic hard disk drives requires a reduced bit size, previously
Externí odkaz:
http://arxiv.org/abs/1111.0524
In order to derive tensorial exchange interactions and local magnetic anisotropies in itinerant magnetic systems, an approach combining the Spin-Cluster Expansion with the Relativistic Disordered Local Moment scheme is introduced. The theoretical bac
Externí odkaz:
http://arxiv.org/abs/1010.2375
Autor:
Asselin, P., Evans, R. F. L., Barker, J., Chantrell, R. W., Yanes, R., Chubykalo-Fesenko, O., Hinzke, D., Nowak, U.
We introduce a constrained Monte Carlo method which allows us to traverse the phase space of a classical spin system while fixing the magnetization direction. Subsequently we show the method's capability to model the temperature dependence of magneti
Externí odkaz:
http://arxiv.org/abs/1006.3507