58 citations · 189 across the 10 of their papers we have counts for
9 papers
Analysis of the linear relationship between asymmetry and magnetic moment at the M-edge of 3d transition metals
Somnath Jana, R. S. Malik, Yaroslav O. Kvashnin +11
The magneto-optical response of Fe and Ni during ultrafast demagnetization is studied experimentally and theoretically. We have performed pump-probe experiments in the transverse m…
Defect energetics of cubic hafnia from quantum Monte Carlo simulations
Raghuveer Chimata, Hyeondeok Shin, Anouar Benali +1
Cubic hafnia (HfO) is of great interest for a number of applications in electronics because of its high dielectric constant. However, common defects in such applications degrad…
Exchange dependent ultrafast magnetization dynamics in FeNi alloys
Somnath Jana, Ronny Knut, Erna K. Delczeg-Czirjak +13
Element specific ultrafast demagnetization was studied in FeNi alloys, covering the concentration range between . For all compositions, we observe a delay…
Inhomogeneous magnon scattering during ultrafast demagnetization
R. Knut, E. K. Delczeg-Czirjak, S. Jana +20
NiFe (Py) and Py alloyed with Cu exhibit intriguing ultrafast demagnetization behavior, where the Ni magnetic moment shows a delayed response relative to the Fe, an…
Ultrafast magnetization dynamics in pure and doped Heusler and inverse Heusler alloys
R. Chimata, E. K. Delczeg-Czirjak, J. Chico +4
By using a multiscale approach based on first-principles density functional theory combined with atomistic spin dynamics, we investigate the electronic structure and magnetization…
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…
Magnetization dynamics in FeCo in presence of chemical disorder
Banasree Sadhukhan, Raghuveer Chimata, Biplab Sanyal +1
In this paper, we present a theoretical formulation of magnetization dynamics in disordered binary alloys based on Kubo linear response theory interfaced with the combination of se…
All-thermal switching of amorphous Gd-Fe alloys: analysis of structural properties and magnetization dynamics
Raghuveer Chimata, Leyla Isaeva, Krisztina Kadas +9
In recent years, there has been an intense interest in understanding the microscopic mechanism of thermally induced magnetization switching driven by a femtosecond laser pulse. Mos…
A microscopic model for ultrafast remagnetization dynamics
Raghuveer Chimata, Anders Bergman, Lars Bergqvist +2
In this letter, we provide a microscopic model for the ultrafast remagnetization of atomic moments already quenched above Stoner-Curie temperature by a strong laser fluence. Combin…