575 citations · 850 across the 33 of their papers we have counts for
20 papers · 1 filter
Unlocking ultrafast spin dynamics in a rare-earth magnet
Paul Herrgen, Christian Holzmann, Torben Manzke +5
The speed of optically driven magnetization dynamics is fundamentally determined by how efficiently angular momentum can be transferred between electronic, spin and lattice degrees…
Decoding Crystallographic Surface Chirality from Real Space and Momentum Space Images by Machine Learning
Chetana Badala Viswanatha, Ka Man Yu, Benito Arnoldi +6
Intrinsically chiral metal surfaces, where handedness arises from the asymmetric step-kink-terrace topology of high-Miller index planes, are model systems for enantiospecific catal…
Impact of Cooperativity on the Spatial and Temporal Evolution of the Light-induced Spin-State Switching of the Fe(phen)(SCN) Spin-Crossover Complex
Chetana Badala Viswanatha, Johannes Stöckl, Benito Arnoldi +7
Spin crossover (SCO) complexes are highly flexible bistable molecular switches with two distinct spin states that can be switched into each other by external stimuli such as temper…
All optical excitation of spin polarization in d-wave altermagnets
Marius Weber, Stephan Wust, Luca Haag +14
The recently discovered altermagnets exhibit collinear magnetic order with zero net magnetization but with unconventional spin-polarized d/g/i-wave band structures, expanding the k…
Signatures of ballistic and diffusive transport in the time-dependent Kerr-response of magnetic materials
Sanjay Ashok, Jonas Hoefer, Martin Stiehl +4
We calculate the influence of diffusive and ballistic transport on ultrafast magnetization in thick metallic films. When only diffusive transport is present, gradients of magnetiza…
Spin transport and magnetic proximity effect in CoFeB/normal metal/Pt trilayers
Simon Häuser, Matthias R. Schweizer, Sascha Keller +7
We present a study of the damping and spin pumping properties of CoFeB/X/Pt systems with and . We show that the total damping of the CoFeB/Pt systems is stron…
Tailoring the ferromagnetic surface potential landscape by a templating two-dimensional metal-organic porous network
Lu Lyu, Martin Anstett, Ka Man Yu +3
Two-dimensional metal-organic porous networks (2D-MOPNs) have been identified as versatile nanoarchitectures to tailor surface electronic and magnetic properties on noble metals. I…
Temperature-driven confinements of surface electrons and adatoms in a weakly interacting 2D organic porous network
Lu Lyu, Jin Xiao, Zakaria M. Abd El-Fattah +11
Two-dimensional organic porous networks (2DOPNs) have opened new vistas for tailoring the physicochemical characteristics of metallic surfaces. These typically chemically bound nan…
Exploring the third dimension in quantum confinement of surface electrons
Lu Lyu, Tobias Eul, Wei Yao +7
Quantum confinement of surface electrons in two-dimensional metal-organic porous networks offers a powerful route to engineer electronic states for emerging quantum and spintronic…
Observation of time-reversal symmetry breaking in the band structure of altermagnetic RuO
O. Fedchenko, J. Minar, A. Akashdeep +20
Altermagnets are an emerging third elementary class of magnets. Unlike ferromagnets, their distinct crystal symmetries inhibit magnetization while, unlike antiferromagnets, they pr…
Competing signatures of intersite and interlayer spin transfer in the ultrafast magnetization dynamics
Simon Häuser, Sebastian T. Weber, Christopher Seibel +10
Optically driven intersite and interlayer spin transfer are individually known as the fastest processes for manipulating the spin order of magnetic materials on the sub 100 fs time…
Coherent magnetization dynamics in strongly quenched Ni thin films
Akira Lentfert, Anulekha De, Laura Scheuer +4
The remagnetization process after ultrafast demagnetization can be described by relaxation mechanisms between the spin, electron, and lattice reservoirs. Thereby, collective spin e…
Laser-induced Creation of antiferromagnetic 180-degree domains in NiO/Pt bilayers
Hendrik Meer, Stephan Wust, Christin Schmitt +15
We demonstrate how the antiferromagnetic order in heterostructures of NiO/Pt thin films can be modified by optical pulses. We irradiate our samples with laser light and identify an…
Indirect optical manipulation of the antiferromagnetic order of insulating NiO by ultrafast interfacial energy transfer
Stephan Wust, Christopher Seibel, Hendrik Meer +14
We report the ultrafast, (sub)picosecond reduction of the antiferromagnetic order of the insulating NiO thin film in a Pt/NiO bilayer. This reduction of the antiferromagnetic order…
Atomic and mesoscopic structure of Dy-based surface alloys on noble metals
Sina Mousavion, Ka Man Yu, Mahalingam Maniraj +4
Surface alloys are a highly tunable class of low dimensional materials with the opportunity to tune and control the spin and charge carrier functionalities on the nanoscale. Here,…
Spectroscopic evidence for a new type of surface resonance at noble metal surfaces
Tobias Eul, Jürgen Braun, Benjamin Stadtmüller +2
We investigate the surface- and bulk-like properties of the pristine (110)-surface of silver using threshold photoemission by excitation with light of 5.9 eV. Using a momentum micr…
Adsorption induced pyramidal distortion of the tri-metallic nitride core inside the endohedral fullerene ScN@C on the Ag(111) surface
J. Seidel, L. L. Kelly, M. Franke +5
Our ability to understand and tailor metal-organic interfaces is mandatory to functionalize organic complexes for next generation electronic and spintronic devices. For magnetic da…
Structure and electronic properties of the () SnAu/Au(111) surface alloy
M. Maniraj, D. Jungkenn, W. Shi +9
We have investigated the atomic and electronic structure of the () SnAu/Au(111) surface alloy. Low energy electron diffraction and scannin…
Topological States on the Gold Surface
Binghai Yan, Benjamin Stadtmüller, Norman Haag +7
Gold surfaces host special electronic states that have been understood as a prototype of Shockley surface states (SSs). These SSs are commonly employed to benchmark the capability…
Approaching ideal graphene: The structure of hydrogen-intercalated graphene on 6H-SiC(0001)
J. Sforzini, L. Nemec, T. Denig +9
We measure the adsorption height of hydrogen-intercalated quasi-free-standing monolayer graphene on the (0001) face of 6H silicon carbide by the normal incidence x-ray standing wav…