Publications (13)
Comparative study of methodologies to compute the intrinsic Gilbert damping: interrelations, validity and physical consequences
Filipe S. M. Guimarães, J. R. Suckert, Jonathan Chico +3
Relaxation effects are of primary importance in the description of magnetic excitations, leading to a myriad of methods addressing the phenomenological damping parameters. In this…
First principles studies of the Gilbert damping and exchange interactions for half-metallic Heuslers alloys
Jonathan Chico, Samara Keshavarz, Yaroslav Kvashnin +6
Heusler alloys have been intensively studied due to the wide variety of properties that they exhibit. One of these properties is of particular interest for technological applicatio…
Thermally driven domain wall motion in Fe on W(1 1 0)
Jonathan Chico, Corina Etz, Lars Bergqvist +4
It has recently been shown that domain walls in ferromagnets can be moved in the presence of thermal gradients. In this work we study the motion of narrow domain walls in low-dimen…
Energy and magnetisation transport in non-equilibrium macrospin systems
Simone Borlenghi, Stefano Iubini, Stefano Lepri +4
We investigate numerically the magnetisation dynamics of an array of nano-disks interacting through the magneto-dipolar coupling. In the presence of a temperature gradient, the cha…
Tunable damping, saturation magnetization, and exchange stiffness of half-Heusler NiMnSb thin films
Philipp Dürrenfeld, Felicitas Gerhard, Jonathan Chico +8
The half-metallic half-Heusler alloy NiMnSb is a promising candidate for applications in spintronic devices due to its low magnetic damping and its rich anisotropies. Here we use f…
Extended spin model in atomistic simulations of alloys
Fan Pan, Jonathan Chico, Anna Delin +2
An extended atomistic spin model allowing for studies of the finite temperature magnetic properties of alloys is proposed. The model is obtained by extending the Heisenberg Hamilto…
A systematic study of magnetodynamic properties at finite temperatures in doped permalloy from first principles calculations
Fan Pan, Jonathan Chico, Johan Hellsvik +3
By means of first principles calculations, we have systematically investigated how the magnetodynamic properties Gilbert damping, magnetization and exchange stiffness are affected…
Probing the Pinning Strength of Magnetic Vortex Cores with sub-nm Resolution
Christian Holl, Marvin Knol, Marco Pratzer +4
Topological magnetic textures such as vortex cores or skyrmions are key candidates for non-volatile information processing. This exploits the texture movement by current pulses tha…
Impurity-dependent gyrotropic motion, deflection and pinning of current-driven ultrasmall skyrmions in PdFe/Ir(111) surface
Imara Lima Fernandes, Jonathan Chico, Samir Lounis
Resting on multi-scale modelling simulations, we explore dynamical aspects characterizing skyrmions driven by spin-transfer-torque towards repulsive and pinning 3d and 4d single at…
Sub-nanoscale atom-by-atom crafting of skyrmion-defect interaction profiles
I Gede Arjana, Imara Lima Fernandes, Jonathan Chico +1
Magnetic skyrmions are prime candidates as information carriers for spintronic devices due to their topological nature and nanometric size. However, unavoidable inhomogeneities inh…
A new look on the two-dimensional Ising model: thermal artificial spins
Unnar B. Arnalds, Jonathan Chico, Henry Stopfel +7
We present a direct experimental investigation of the thermal ordering in an artificial analogue of an asymmetric two dimensional Ising system composed of a rectangular array of na…
Electronic structure and magnetic properties of L1_0 binary alloys
Alexander Edström, Jonathan Chico, Adam Jakobsson +2
We present a systematic study of the magnetic properties of L1 binary alloys FeNi, CoNi, MnAl and MnGa via two different density functional theory approaches. Our calculations…
Topological excitations in a Kagomé magnet
Manuel Pereiro, Dmitry Yudin, Jonathan Chico +3
It is shown here that a Kagomé magnet, with Heisenberg and Dzyaloshinskii-Moriya interactions causes non trivial topological and chiral magnetic properties. Chirality---that is, l…