170 citations · 500 across the 17 of their papers we have counts for
17 papers
Megahertz-rate Ultrafast X-ray Scattering and Holographic Imaging at the European XFEL
Nanna Zhou Hagström, Michael Schneider, Nico Kerber +97
The advent of X-ray free-electron lasers (XFELs) has revolutionized fundamental science, from atomic to condensed matter physics, from chemistry to biology, giving researchers acce…
Non-equilibrium self-assembly of spin-wave solitons in FePt nanoparticles
D. Turenne, A. Yaroslavtsev, X. Wang +36
Magnetic nanoparticles such as FePt in the L10-phase are the bedrock of our current data storage technology. As the grains become smaller to keep up with technological demands, the…
Strain Engineering of Epitaxial Pt/Fe Spintronic Terahertz Emitter
Rahul Gupta, Ebrahim Bagherikorani, Venkatesh Mottamchetty +8
Spin-based terahertz (THz) emitters, utilizing the inverse spin Hall effect, are ultra-modern sources for the generation of THz electromagnetic radiation. To make a powerful emitte…
Balanced Detection in Femtosecond X-ray Absorption Spectroscopy to Reach the Ultimate Sensitivity Limit
W. F. Schlotter, M. Beye, S. Zohar +21
X-ray absorption spectroscopy (XAS) is a powerful and well established technique with sensitivity to elemental and chemical composition. Despite these advantages, its implementatio…
Distinguishing Local and non-Local Demagnetization in Ferromagnetic FePt Nanoparticles
Patrick W. Granitzka, Alexander H. Reid, Jerome Hurst +21
Time-resolved coherent X-ray diffraction is used to measure the spatially resolved magnetization structure within FePt nanoparticles during laser-induced ultrafast demagnetization.…
Ultrafast X-Ray Induced Changes of the Electronic and Magnetic Response of Solids Due to Valence Electron Redistribution
Daniel J. Higley, Alex H. Reid, Zhao Chen +13
We report a novel mechanism, consisting of redistribution of valence electrons near the Fermi level, during interactions of intense femtosecond X-ray pulses with a Co/Pd multilayer…
A tilted pulse-front setup for femtosecond extreme ultraviolet transient grating spectroscopy in highly non-collinear geometries
A. Battistoni, H. A. Dürr, M. Gühr +1
We demonstrate a tilted pulse-front transient grating technique that allows to optimally utilize time-resolution as well as transient grating line density while probing under grazi…
Emerging Magnetic Order In Copper Induced By Proximity To Cobalt: A Detailed Soft X-Ray Spectroscopy Study
Zhao Chen, Hendrik Ohldag, Tyler Chase +7
We present an x-ray magnetic dichroism (XMCD) and soft x-ray absorption spectroscopy (XAS) study to address the nature of emerging magnetic order in metallic Copper as Cobalt is ad…
Ultrafast imprinting of topologically protected magnetic textures via pulsed electrons
A. F. Schäffer, H. A. Dürr, J. Berakdar
Short electron pulses are demonstrated to trigger and control magnetic excitations, even at low electron current densities. We show that the tangential magnetic field surrounding a…
Electron correlation effects and scattering rates in FeTeSe superconductor
S. Thirupathaiah, J. Fink, P. K. Maheswari +8
Using angle-resolved photoemission spectroscopy we have studied the low-energy electronic structure and the Fermi surface topology of FeTeSe superconductors. Si…
Generation of high-frequency strain waves during femtosecond demagnetization of Fe/MgO films
T. Henighan, M. Trigo, S. Bonetti +22
We use femtosecond time-resolved hard x-ray scattering to detect coherent acoustic phonons excited during ultrafast laser demagnetization of bcc Fe films. We determine the lattice…
Nanoscale confinement of all-optical switching in TbFeCo using plasmonic antennas
TianMin Liu, Tianhan Wang, Alexander H. Reid +17
All-optical switching (AOS) of magnetic domains by femtosecond laser pulses was first observed in the transition metal-rare earth (TM-RE) alloy GdFeCo1-5; this phenomenon demonstra…
Electron-phonon coupling and momentum-dependent electron dynamics in EuFe2As2 using time- and angle-resolved photoemission spectroscopy
L. Rettig, R. Cortés, S. Thirupathaiah +7
The Fe pnictide parent compound EuFe2As2 exhibits a strongly momentum dependent carrier dynamics around the hole pocket at the center of the Brillouin zone. The very different dyna…
Dual Behavior of Antiferromagnetic Uncompensated Spins in NiFe/IrMn Exchange Biased Bilayers
S. K. Mishra, F. Radu, S. Valencia +4
We present a comprehensive study of the exchange bias effect in a model system. Through numerical analysis of the exchange bias and coercive fields as a function of the antiferroma…
Training Induced Positive Exchange Bias in NiFe/IrMn Bilayers
S. K. Mishra, F. Radu, H. A. Dürr +1
Positive exchange bias has been observed in the NiFe/IrMn bilayer system via soft x-ray resonant magnetic scattering. After field cooling of the system…
Electronic structure studies of BaFe2As2 by angle-resolved photoemission spectroscopy
J. Fink, S. Thirupathaiah, R. Ovsyannikov +12
We report high resolution angle-resolved photoemission spectroscopy (ARPES) studies of the electronic structure of BaFeAs, which is one of the parent compounds of the Fe-pn…
Origin of the reduced exchange bias in epitaxial FeNi(111)/CoO(111) bilayer
F. Radu, S. K. Mishra, I. Zizak +12
We have employed Soft and Hard X-ray Resonant Magnetic Scattering and Polarised Neutron Diffraction to study the magnetic interface and the bulk antiferromagnetic domain state of t…