115 citations · 715 across the 19 of their papers we have counts for
8 papers · 1 filter
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…
Electronic topological transition and non-collinear magnetism in compressed hcp Co
Y. O. Kvashnin, W. Sun, I. Di Marco +1
Recent experiments showed that Co undergoes a phase transition from ferromagnetic hcp phase to non-magnetic fcc one around 100 GPa. Since the transition is of first order, a certai…
Interatomic exchange interactions in non-collinear magnets
A. Szilva, M. Costa, A. Bergman +3
We derive ab inito exchange parameters for general non-collinear magnetic configurations, in terms of a multiple scattering formalism. We show that the general exchange formula has…
Disorder induced metallicity in amorphous graphene
E. Holmstrom, J. Fransson, O. Eriksson +3
We predict a transition to metallicity when a sufficient amount of disorder is induced in graphene. Calculations were performed by means of a first principles stochastic quench met…
Tuning of dielectric properties and magnetism of SrTiO3 by site-specific doping of Mn
D. Choudhury, S. Mukherjee, P. Mandal +12
Combining experiments with first principles calculations, we show that site-specific doping of Mn into SrTiO3 has a decisive influence on the dielectric properties of these doped s…
Quantitative determination of spin-dependent quasiparticle lifetimes and electronic correlations in hcp cobalt
J. Sanchez-Barriga, J. Minar, J. Braun +13
We report on a quantitative investigation of the spin-dependent quasiparticle lifetimes and electron correlation effects in ferromagnetic hcp Co(0001) by means of spin and angle-re…
Dynamics of diluted magnetic semiconductors from atomistic spin dynamics simulations: Mn doped GaAs as a case study
J. Hellsvik, B. Skubic, L. Nordström +4
The dynamical behavior of the magnetism of diluted magnetic semiconductors (DMS) has been investigated by means of atomistic spin dynamics simulations. The conclusions drawn from t…