4 papers
Disorder-induced localisation in the Mott-Hubbard model
Ričards Kristers Knipšis, Friedemann Queisser, Jesumony Jayabalan +4
For the Fermi-Hubbard model in the Mott insulator phase, we employ the hierarchy of correlations to study how doublon and holon quasi-particle excitations are affected by adding di…
Femtosecond spin-state switching dynamics of spin-crossover molecules condensed in thin films
Lea Kämmerer, Gérald Kämmerer, Manuel Gruber +22
The photoinduced switching of Fe(II)-based spin-crossover complexes from singlet to quintet takes place at ultrafast time scales. This a priori spin-forbidden transition triggered…
Thermal expansion in photo-assisted tunneling: visible light versus free-space terahertz pulses
Hüseyin Azazoglu, Rolf Möller, Manuel Gruber
Photo-assisted tunneling in scanning tunneling microscopy has attracted considerable interest to combine sub-picosecond and sub-nanometer resolutions. The illumination of a junctio…
Variable-temperature lightwave-driven scanning tunneling microscope with a compact, turn-key terahertz source
Hüseyin Azazoglu, Philip Kapitza, Martin Mittendorff +2
We report on a lightwave-driven scanning tunneling microscope based on a home-built microscope and a compact, commercial, and cost-effective terahertz-generation unit with a repeti…