241 citations · 1.1k across the 35 of their papers we have counts for
15 papers · 1 filter
How closely does transient magnetic linear dichroism follow the spin moment?
Eddie Harris-Lee, John Kay Dewhurst, Peter Elliott +2
In highly out-of-equilibrium states of matter, such as those induced by a pump laser, the applicability of well established spectroscopic probes of magnetic order are called into q…
Electronic origin of x-ray absorption peak shifts
S. Shallcross, C. v. Korff Schmising, P. Elliott +3
Encoded in the transient x-ray absorption (XAS) and magnetic circular (MCD) response functions resides a wealth of information of the microscopic processes of ultrafast demagnetisa…
Transient spin injection efficiencies at ferromagnet/metal interfaces
P. Elliott, A. Eschenlohr, J. Chen +4
Spin injection across interfaces driven by ultrashort optical pulses on femtosecond timescales constitutes a new way to design spintronics applications. Targeted utilization of thi…
Making a case for femto- phono- magnetism with FePt
S. Sharma, S. Shallcross, P. Elliott +1
In the field of femtomagnetism magnetic matter is controlled by ultrafast laser pulses; here we show that coupling phonon excitations of the nuclei to spin and charge leads to femt…
Ab-initio study of ultrafast spin dynamics in Gdx(FeCo){1-x} alloys
J. K. Dewhurst, Sam Shallcross, I. E. Radu +3
Using an ultrashort laser pulse we explore {\it ab-initio} the spin dynamics of Gd(FeCo) at femtosecond time scales. Optical excitations are found to drive charge from…
Probing the energy conversion pathways between light, carriers and lattice in real time with attosecond core-level spectroscopy
T. P. H. Sidiropoulos, N. Di Palo, D. E. Rivas +16
Detection of the energy conversion pathways, between photons, charge carriers, and the lattice is of fundamental importance to understand fundamental physics and to advance materia…
Numerical analysis of XMCD sum rules at the -edge: when do they fail?
S. Shallcross, J. K. Dewhurst, P. Elliott +3
In the highly non-equilibrium conditions of laser induced spin dynamics magnetic moments can only be obtained from the spectral information, most commonly from the spectroscopy of…
Element specificity of transient extreme ultra-violet magnetic dichroism
J. K. Dewhurst, F. Willems, P. Elliott +6
In this work we combine theory and experiment to study transient magnetic circular dichroism (tr-MCD) in the extreme ultraviolet spectral range (XUV) in bulk Co and CoPt. We use th…
Control of magnons via ultrafast magnetization modulation
N. Singh, P. Elliott, J. K. Dewhurst +1
We demonstrate optical control of magnons using femtosecond laser pulses by performing ab-initio real-time time-dependent density functional theory (TDDFT) simulations. We predict…
The generalized gradient approximation kernel in time-dependent density functional theory
N. Singh, P. Elliott, T. Nautiyal +2
A complete understanding of a material requires both knowledge of the excited states as well as of the ground state. In particular, the low energy excitations are of utmost importa…
Competing spin transfer and dissipation at Co/Cu(001) interfaces on femtosecond timescales
J. Chen, U. Bovensiepen, A. Eschenlohr +5
By combining interface-sensitive non-linear magneto-optical experiments with femtosecond time resolution and ab-initio time-dependent density functional theory, we show that optica…
Role of Spin Flips versus Spin Transport in Non Thermal Electrons Excited by Ultrashort Optical Pulses in Transition Metals
V. Shokeen, M. Sanchez Piaia, J. -Y. Bigot +5
A joint theoretical and experimental investigation is performed to understand the underlying physics of laser-induced demagnetization in Ni and Co films. Experimentally dynamics of…
Demonstration of Optimal Control of Laser Induced Spin-Orbit Mediated Ultrafast Demagnetization
P. Elliott, K. Krieger, J. K. Dewhurst +2
Laser induced ultrafast demagnetization is the process whereby the magnetic moment of a ferromagnetic material is seen to drop significantly on a timescale of s of femtosec…
Non-empirical 'derivation' of B88 exchange functional
Peter Elliott, Kieron Burke
The B88 exchange energy density functional (created by Becke in 1988) is a crucial part of the most popular density functional in use today, B3LYP. B88 contains one empirical param…
Excited states from time-dependent density functional theory
Peter Elliott, Kieron Burke, Filipp Furche
Time-dependent density functional theory (TDDFT) is presently enjoying enormous popularity in quantum chemistry, as a useful tool for extracting electronic excited state energies.…