Zobrazeno 1 - 10
of 2 820
pro vyhledávání: '"A. Sjöqvist"'
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:
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
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:
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
Publikováno v:
Phys. Rev. A 109, 042610 (2024)
We propose iSWAP-type quantum gates based on geometric phases purely associated with paths on the Schmidt sphere [Phys. Rev. A 62, 022109 (2000)]. These geometric Schmidt gates can entangle qubit pairs to an arbitrary degree; in particular, they can
Externí odkaz:
http://arxiv.org/abs/2310.10515
Autor:
Bilik, Simon, Batrakhanov, Daniel, Eerola, Tuomas, Haraguchi, Lumi, Kraft, Kaisa, Wyngaert, Silke Van den, Kangas, Jonna, Sjöqvist, Conny, Madsen, Karin, Lensu, Lasse, Kälviäinen, Heikki, Horak, Karel
Phytoplankton parasites are largely understudied microbial components with a potentially significant ecological impact on phytoplankton bloom dynamics. To better understand their impact, we need improved detection methods to integrate phytoplankton p
Externí odkaz:
http://arxiv.org/abs/2303.08744
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