Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Thonig, Danny"'
Autor:
Azimi-Mousolou, Vahid, Bergman, Anders, Delin, Anna, Eriksson, Olle, Pereiro, Manuel, Thonig, Danny, Sjöqvist, Erik
Toroidal classification and geometric duality in quantum spin systems is presented. Through our classification and duality, we reveal that various bipartite quantum features in magnon-systems can manifest equivalently in both bipartite ferromagnetic
Externí odkaz:
http://arxiv.org/abs/2406.13830
Magnetic skyrmions have garnered attention for their potential roles in spintronic applications, such as information carriers in computation, data storage, and nano-oscillators due to their small size, topological stability, and the requirement of sm
Externí odkaz:
http://arxiv.org/abs/2405.10571
Autor:
Lu, Zhiwei, Miranda, I. P., Streib, Simon, Xu, Qichen, Cheenikundil, Rajgowrav, Pereiro, Manuel, Sjöqvist, Erik, Eriksson, Olle, Bergman, Anders, Thonig, Danny, Delin, Anna
The impact of the local chemical environment on the Gilbert damping in the binary alloy Fe$_{100-x}$Co$_{x}$ is investigated, using computations based on density functional theory. By varying the alloy composition x as well as Fe/Co atom positions we
Externí odkaz:
http://arxiv.org/abs/2405.02494
Autor:
Liu, Yuefei, Miranda, Ivan P., Johnson, Lee, Bergman, Anders, Delin, Anna, Thonig, Danny, Pereiro, Manuel, Eriksson, Olle, Mousolou, Vahid Azimi, Sjöqvist, Erik
The Landau-Lifshitz-Gilbert (LLG) and Landau-Lifshitz (LL) equations play an essential role for describing the dynamics of magnetization in solids. While a quantum analog of the LL dynamics has been proposed in [Phys. Rev. Lett. 110, 147201 (2013)],
Externí odkaz:
http://arxiv.org/abs/2403.09255
Autor:
Xu, Qichen, Shen, Zhuanglin, Edström, Alexander, Miranda, I. P., Lu, Zhiwei, Bergman, Anders, Thonig, Danny, Yin, Wanjian, Eriksson, Olle, Delin, Anna
Despite extensive research on magnetic skyrmions and antiskyrmions, a significant challenge remains in crafting nontrivial high-order skyrmionic textures with varying, or even tailor-made, topologies. We address this challenge, by focusing on a const
Externí odkaz:
http://arxiv.org/abs/2402.10874
Autor:
Cardias, Ramon, Streib, Simon, Lu, Zhiwei, Pereiro, Manuel, Bergman, Anders, Sjöqvist, Erik, Barreteau, Cyrille, Delin, Anna, Eriksson, Olle, Thonig, Danny
We developed a method which performs the coupled adiabatic spin and lattice dynamics based on the tight-binding electronic structure model, where the intrinsic magnetic field and ionic forces are calculated from the converged self-consistent electron
Externí odkaz:
http://arxiv.org/abs/2311.00765
Autor:
Xu, Qichen, Miranda, I. P., Pereiro, Manuel, Rybakov, Filipp N., Thonig, Danny, Sjöqvist, Erik, Bessarab, Pavel, Bergman, Anders, Eriksson, Olle, Herman, Pawel, Delin, Anna
We present a metaheuristic conditional neural-network-based method aimed at identifying physically interesting metastable states in a potential energy surface of high rugosity. To demonstrate how this method works, we identify and analyze spin textur
Externí odkaz:
http://arxiv.org/abs/2303.02876
Autor:
Azimi-Mousolou, Vahid, Bergman, Anders, Delin, Anna, Eriksson, Olle, Pereiro, Manuel, Thonig, Danny, Sjöqvist, Erik
The detection of magnons and their quantum properties, especially in antiferromagnetic (AFM) materials, is a substantial step to realize many ambitious advances in the study of nanomagnetism and the development of energy efficient quantum technologie
Externí odkaz:
http://arxiv.org/abs/2302.13167
Autor:
Streib, Simon, Cardias, Ramon, Pereiro, Manuel, Bergman, Anders, Sjöqvist, Erik, Delin, Anna, Eriksson, Olle, Thonig, Danny
The spectrum of magnon excitations in magnetic materials can be obtained exactly from the transverse dynamic magnetic susceptibility, which is however in practice numerically expensive. Many ab initio approaches therefore consider instead the adiabat
Externí odkaz:
http://arxiv.org/abs/2302.10958
Autor:
Lu, Zhiwei, Miranda, I. P., Streib, Simon, Pereiro, Manuel, Sjöqvist, Erik, Eriksson, Olle, Bergman, Anders, Thonig, Danny, Delin, Anna
We study the influence of non-local damping on magnon properties of Fe, Co, Ni and Fe$_{1-x}$Co$_{x}$ ($x=30\%,50\%$) alloys. The Gilbert damping parameter is typically considered as a local scalar both in experiment and in theoretical modelling. How
Externí odkaz:
http://arxiv.org/abs/2211.13486