184 citations · 321 across the 12 of their papers we have counts for
15 papers
Momentum transfer in the ponderomotive potential of near-infrared laser pulses leads to sizable energy shifts and electron-wavepacket squeezing in time-resolved ARPES
Xinwei Zheng, Martin Weinelt, Christian Strüber
We observe momentum transfer in the ponderomotive potential of near-infrared (NIR) laser pulses in time- and angle-resolved photoemission spectroscopy (tr-ARPES) experiments with u…
Ultrafast non-equilibrium magnon generation and collapse of spin-orbit hybridization gaps in iron
Xinwei Zheng, Shabnam Haque, Christian Strüber +1
We distinguish between longitudinal and transverse spin excitations in the ultrafast response of iron by probing exchange splitting ΔEex and magnetic linear dichroism (MLD) in time…
Magnon-mediated terahertz spin transport in metallic Gd|Pt stacks
Oliver Gueckstock, Tim Amrhein, Beatrice Andres +11
We study femtosecond spin transport in a Gd|Pt stack induced by a laser pulse. Remarkably, the dynamics of the spin current from Gd to Pt suggests that its dominant driving force i…
Local work-function manipulation by external optical stimulation
Jan Böhnke, Beatrice Andres, Larissa Boie +4
Strongly differing static dipole moments of the trans and cis isomers of photochromic azobenzene allow for optical switching the work function of azobenzene-functionalized self-ass…
Strong Momentum-Dependent Electron-Magnon Renormalization of a Surface Resonance on Iron
Beatrice Andres, Martin Weinelt, Hubert Ebert +3
The coupling of fermionic quasiparticles to magnons is essential for a wide range of processes, from ultrafast magnetization dynamics in ferromagnets to Cooper pairing in supercond…
The role of spin-lattice coupling for ultrafast magnetization changes in rare earth metals
Beatrice Andres, Sang Eun Lee, Martin Weinelt
By comparing femtosecond laser-pulse-induced spin dynamics in the surface state of the rare earth metals Gd and Tb we show that the spin polarization of the valence states in both…
Ultrafast demagnetization of iron induced by optical vs terahertz pulses
A. L. Chekhov, Y. Behovits, J. J. F. Heitz +7
We study ultrafast magnetization quenching of ferromagnetic iron following excitation by an optical vs a terahertz pump pulse. While the optical pump (photon energy of 3.1 eV) indu…
Optical control of 4f orbital state in rare-earth metals
N. Thielemann-Kühn, T. Amrhein, W. Bronsch +28
A change of orbital state alters the coupling between ions and their surroundings drastically. Orbital excitations are hence key to understand and control interaction of ions. Rare…
Grueneisen-Approach for the Experimental Determination of Transient Spin and Phonon Energies from Ultrafast X-ray Diffraction Data: Gadolinium
A. Koc, M. Reinhardt, A. von Reppert +6
We study gadolinium thin films as a model system for ferromagnets with negative thermal expansion. Ultrashort laser pulses heat up the electronic subsystem and we follow the transi…
Optical properties of azobenzene-functionalized self-assembled monolayers: Intermolecular coupling and many-body interactions
Caterina Cocchi, Thomas Moldt, Cornelius Gahl +2
In a joint theoretical and experimental work the optical properties of azobenzene-functionalized self-assembled monolayers (SAMs) are studied at different molecular packing densiti…
Ultrafast spin density wave transition in Chromium governed by thermalized electron gas
C. W. Nicholson, C. Monney, R. Carley +4
The energy and momentum selectivity of time- and angle-resolved photoemission spectroscopy is exploited to address the ultrafast dynamics of the antiferromagnetic spin density wave…
Angular dependent resonant photoemission processes at the 2p thresholds in nickel metal
M. Magnuson, A. Nilsson, M. Weinelt +1
Angle-resolved valence-band resonant photoemission of nickel metal has been measured close to the 2p core-level thresholds with synchrotron radiation. The well-known 6-eV correlati…
Hot electron driven enhancement of spin-lattice coupling in 4f ferromagnets observed by femtosecond x-ray magnetic circular dichroism
Marko Wietstruk, Alexey Melnikov, Christian Stamm +7
Due to an error this article has been annouced as a new article instead of a corrected version of article 1010.1374.
Hot electron driven enhancement of spin-lattice coupling in 4f ferromagnets observed by femtosecond x-ray magnetic circular dichroism
Marko Wietstruk, Alexey Melnikov, Christian Stamm +7
Femtosecond x-ray magnetic circular dichroism was used to study the time-dependent magnetic moment of 4 fs electrons in the ferromagnets Gd and Tb, which are known for their differ…
Azobenzene versus 3,3',5,5'-tetra-tert-butyl-azobenzene (TBA) at Au(111): Characterizing the role of spacer groups
Erik R. McNellis, Christopher Bronner, Jorg Meyer +3
We present large-scale density-functional theory (DFT) calculations and temperature programmed desorption measurements to characterize the structural, energetic and vibrational pro…