101 citations · 204 across the 15 of their papers we have counts for
15 papers
Phase-selective orbital-charge conversion in
J. L. Costa, E. Santos, G. R. Gallo +7
Two-dimensional transition metal dichalcogenides (TMDs) have emerged as promising materials for spin--orbitronics owing to their strong spin--orbit coupling and rich electronic pha…
Real-Space Spectral Approach to Orbital Magnetization
Kevin J. U. Vidarte, Henrique P. Veiga, João M. Viana Parente Lopes +4
We present a real-space spectral method for computing the orbital magnetization of crystals. Starting from the commutator form of the orbital magnetization operator, we formulate a…
Real-space first-principles approach to orbitronic phenomena in metallic multilayers
Ramon Cardias, Hugo U. R. Strand, Anders Bergman +2
We develop a real-space first-principles method based on density functional theory to investigate orbitronic phenomena in complex materials. Using the Real-Space Linear Muffin-Tin…
Edge non-collinear magnetism in nanoribbons of Fe3GeTe2 and Fe3GaTe2
R. Cardias, Anders Bergman, Hugo U. R. Strand +2
Fe3GeTe2 and Fe3GaTe2 are ferromagnetic conducting materials of van der Waals-type with unique magnetic properties that are highly promising for the development of new spintronic,…
Coupled spin-lattice dynamics from the tight-binding electronic structure
Ramon Cardias, Simon Streib, Zhiwei Lu +7
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 i…
Unraveling the connection between high-order magnetic interactions and local-to-global spin Hamiltonian in non-collinear magnetic dimers
Ramon Cardias, Jhonatan dos Santos Silva, Anders Bergman +7
A spin Hamiltonian, which characterizes interatomic interactions between spin moments, is highly valuable in predicting and comprehending the magnetic properties of materials. A de…
Adiabatic magnon spectra with and without constraining field: Benchmark against an exact magnon spectrum
Simon Streib, Ramon Cardias, Manuel Pereiro +5
The spectrum of magnon excitations in magnetic materials can be obtained exactly from the transverse dynamic magnetic susceptibility, which is however in practice numerically expen…
Adiabatic spin dynamics and effective exchange interactions from constrained tight-binding electronic structure theory: Beyond the Heisenberg regime
Simon Streib, Ramon Cardias, Manuel Pereiro +6
We consider an implementation of the adiabatic spin dynamics approach in a tight-binding description of the electronic structure. The adiabatic approximation for spin-degrees of fr…
Chiral Spin and Orbital Angular Momentum Textures in Mn Chains on W(110): Interplay of Spin-Orbit Coupling and Crystal Field Effects
M. M. Bezerra-Neto, Y. O. Kvashnin, A. Bergman +5
Stabilization of unusual spin-orbit driven magnetic orderings are achieved for chains of Mn atoms deposited on a W(110) substrate. First-principles electronic structure calculation…
Spin dynamics from a constrained magnetic Tight-Binding model
Ramon Cardias, Cyrille Barreteau, Pascal Thibaudeau +1
A dynamics of the precession of coupled atomic moments in the tight-binding (TB) approximation is presented. By implementing an angular penalty functional in the energy that captur…
First-principles Dzyaloshinskii-Moriya interaction in a non-collinear framework
R. Cardias, A. Szilva, M. M. Bezerra-Neto +7
We have derived an expression of the Dzyaloshinskii-Moriya (DM) interaction, where all the three components of the DM vector can be calculated independently, for a general, non-col…
Dzyaloshinskii-Moriya interaction in absence of spin-orbit coupling
Ramon Cardias, Anders Bergman, Attila Szilva +5
In contrast to conventional assumptions, we show that the Dzyaloshinskii-Moriya interaction can be of non-relativistic origin, in particular in materials with a non-collinear magne…
Theory of non-collinear interactions beyond Heisenberg exchange; applications to bcc Fe
A. Szilva, D. Thonig, P. F. Bessarab +8
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…
Magnetism and ultra-fast magnetization dynamics of Co and CoMn alloys at finite temperature
R. Chimata, E. K. Delczeg-Czirjak, A. Szilva +9
Temperature-dependent magnetic experiments like pump-probe measurements generated by a pulsed laser have become a crucial technique for switching the magnetization in the picosecon…
Microscopic origin of Heisenberg and non-Heisenberg exchange interactions in ferromagnetic bcc Fe
Y. O. Kvashnin, R. Cardias, A. Szilva +6
By means of first principles calculations we investigate the nature of exchange coupling in ferromagnetic bcc Fe on a microscopic level. Analyzing the basic electronic structure re…