179 citations · 357 across the 11 of their papers we have counts for
11 papers
Coherent phonon control beyond amplitude saturation in a sliding ferroelectric
Jan Gerrit Horstmann, Christoph Emeis, Andrin Caviezel +5
The breakdown of Hooke's law marks the onset of nonlinear behaviour: when displacements become large, restoring forces weaken and conventional proportionality fails. In quantum mat…
Distribution of antiferromagnetic rare-earth domains in multiferroic DyTbFeO
Yannik Zemp, Ehsan Hassanpour, Jan Gerrit Horstmann +6
In many multiferroics, rare-earth and transition-metal orders exist side by side. For analyzing their interaction and its consequences for the multiferroic state, the associated do…
Dynamic control of ferroic domain patterns by thermal quenching
Jan Gerrit Horstmann, Ehsan Hassanpour, Yannik Zemp +3
Controlling the domain structure of ferroic materials is key to manipulating their functionality. Typically, quasi-static electric, magnetic, or strain fields are exploited to tran…
Optical switching of ferro-rotational charge-density wave states
Wayne Cheng-Wei Huang, Sai Mu, Gevin von Witte +7
Tailored optical excitations can steer a system along non-equilibrium pathways to metastable states with specific structural or electronic properties. The light-induced hidden stat…
Valley-controlled photoswitching of metal-insulator nanotextures
Hannes Böckmann, Jan Gerrit Horstmann, Felix Kurtz +5
Spatial heterogeneity and phase competition are hallmarks of strongly-correlated materials, promising tunable functionality on the nanoscale. Light-induced switching of a correlate…
Mode-selective ballistic pathway to a metastable electronic phase
Hannes Böckmann, Jan Gerrit Horstmann, Abdus Samad Razzaq +2
Exploiting vibrational excitation for the dynamic control of material properties is an attractive goal with wide-ranging technological potential. Most metal-to-insulator transition…
Surface structure and stacking of the commensurate R13.9° charge density wave phase of 1T-TaS(0001)
Gevin von Witte, Tilman Kißlinger, Jan Gerrit Horstmann +4
By quantitative low-energy electron diffraction (LEED) we investigate the extensively studied commensurate charge density wave (CDW) phase of trigonal tantalum disulphide (1T-TaS$_…
Structural Dynamics of incommensurate Charge-Density Waves tracked by Ultrafast Low-Energy Electron Diffraction
Gero Storeck, Jan Gerrit Horstmann, Theo Diekmann +5
We study the non-equilibrium structural dynamics of the incommensurate and nearly-commensurate charge-density wave phases in 1T-TaS. Employing ultrafast low-energy electron dif…
Surface resonance of the (21) reconstructed lanthanum hexaboride (001)-cleavage plane: a combined STM and DFT study
P. Buchsteiner, F. Sohn, J. G. Horstmann +6
We performed a combined study of the (001)-cleavage plane of lanthanum hexaboride (LaB) using scanning tunneling microscopy (STM) and density functional theory (DFT). Ex…
Coherent control of a structural phase transition in a solid-state surface system
Jan Gerrit Horstmann, Bareld Wit, Gero Storeck +1
The desire to exert active optical control over matter is a unifying theme across multiple scientific disciplines, as exemplified by all-optical magnetic switching, light-induced m…
Phase-ordering of charge density waves traced by ultrafast low-energy electron diffraction
S. Vogelgesang, G. Storeck, S. Schramm +3
We introduce ultrafast low-energy electron diffraction (ULEED) in backscattering for the study of structural dynamics at surfaces. Using a tip-based source of ultrashort electron p…