325 citations · 2.2k across the 70 of their papers we have counts for
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Ultrafast Néel vector switching
Eddie Ivor Harris-Lee, John Kay Dewhurst, Wenhan Chen +3
We predict ultrafast switching in a chiral anti-ferromagnet that occurs at femtosecond times, nearly 5 orders of magnitude faster than the torque induced nanosecond switching previ…
Coupled femto-excitons, free carriers and light
Deepika Gill, Sam Shallcross, Wenhan Chen +2
Non-equilibrium quantum matter generated by ultrafast laser light opens new pathways in fundamental condensed matter physics, as well as offering rich control possibilities in "tai…
Giant moment increase by ultrafast laser light
Sangeeta Sharma, Deepika Gill, Jyoti Krishna +3
It is now well established that a few femtosecond laser pulse will induce an ultrafast loss of moment in a magnetic material. Here we show that the opposite effect can also occur:…
Magnetizing altermagnets by ultrafast asymmetric spin dynamics
Zhaobo Zhou, Sangeeta Sharma, John Kay Dewhurst +1
Laser pulses are known to induce symmetric demagnetization: equal loss of magnetic moments in the identical sublattices of antiferromagnets and ferromagnets at ultrashort timescale…
Kohn-Sham-Proca equations for ultrafast exciton dynamics
J. K. Dewhurst, D. Gill, S. Shallcross +1
A long standing problem in time dependent density functional theory (TD-DFT) has been the absence of a functional able to capture excitonic physics under laser pump conditions. Her…
Verification of ultrafast spin transfer effects in FeNi alloys
Christina Möller, Henrike Probst, G. S. Matthijs Jansen +7
The optical intersite spin transfer (OISTR) effect was recently verified in FeNi using magneto-optical Kerr measurements in the extreme ultraviolet range. However, on…
Unraveling Femtosecond Spin and Charge Dynamics with EUV T-MOKE Spectroscopy
Henrike Probst, Christina Möller, Maren Schumacher +7
The magneto-optical Kerr effect (MOKE) in the extreme ultraviolet (EUV) regime has helped to elucidate some of the key processes that lead to the manipulation of magnetism on ultra…
Partially deorbitalized meta-GGA
Pietro Bonfà, Sangeeta Sharma, John Kay Dewhurst
Mejia-Rodriguez and Trickey recently proposed a procedure for removing the explicit dependence of meta-GGA exchange-correlation energy functionals on the kinetic energ…
Magnetic phase diagram of the austenitic Mn-rich Ni-Mn-(In,Sn) Heusler alloys
Pietro Bonfà, Simone Chicco, Francesco Cugini +3
Heusler compounds have been intensively studied owing to the important technological advancements that they provide in the field of shape memory, thermomagnetic energy conversion a…
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…
Mapping the energy-time landscape of spins with helical X-rays
N. Pontius, J. K. Dewhurst, C. Schuessler-Langeheine +5
Unveiling the key mechanisms that determine optically driven spin dynamics is essential both to probe the fundamental nature of ultrafast light-matter interactions, but also to dri…
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…
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…
Where does the spin angular momentum go in laser induced demagnetisation?
J. K. Dewhurst, S. Shallcross, P. Elliott +3
The dynamics of ultrafast demagnetisation in 3 magnets is complicated by the presence of both spin and orbital angular momentum, with the microscopic mechanism…
Extending solid-state calculations to ultra long-range length scales
Tristan Müller, Sangeeta Sharma, E. K. U. Gross +1
We present a method which enables solid-state density functional theory calculations to be applied to systems of almost unlimited size. Computations of physical effects up to the m…
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…
Magneto-Optical Functions at the 3p resonances of Fe, Co, and Ni: Ab-initio description and experiment
F. Willems, S. Sharma, C. v. Korff Schmising +7
We present theoretical and experimental data on the magneto-optical contributions to the complex refractive index in the extreme ultraviolet (XUV) range covering the 3p resonances…
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…
Effect of exchange-correlation spin-torque on spin dynamics
J. K. Dewhurst, A. Sanna, S. Sharma
A recently proposed exchange-correlation functional (Dewhurst et al. 10.1021/acs.jctc.7b01049) with in density functional theory, which ensures that the exchange-correlation magnet…