159 citations · 358 across the 13 of their papers we have counts for
13 papers
Polarization-dependent infrared reflectivity study of SrCaCuO under pressure: Charge dynamics, charge distribution, and anisotropy
S. Frank, A. Huber, U. Ammerahl +2
We present a polarization-dependent infrared reflectivity study of the spin-ladder compound SrCaCuO under pressure. The optical response is strongly…
Effect of high pressure on multiferroic BiFeO3
R. Haumont, P. Bouvier, A. Pashkin +6
We report experimental evidence for pressure instabilities in the model multiferroic BiFeO3 and namely reveal two structural phase transitions around 3 GPa and 10 GPa by using diff…
Mott-Hubbard gap closure and structural phase transition in the oxyhalides TiOBr and TiOCl under pressure
C. A. Kuntscher, A. Pashkin, H. Hoffmann +9
Pressure-dependent transmittance and reflectance spectra of TiOBr and TiOCl single crystals at room temperature suggest the closure of the Mott-Hubbard gap, i.e., the gap is filled…
Pressure-induced phase transitions in the multiferroic perovskite BiFeO3 studied by far-infrared micro-spectroscopy
A. Pashkin, K. Rabia, S. Frank +4
We present the results of pressure-dependent far-infrared reflectivity measurements on the multiferroic perovskite BiFeO3 at room temperature. The observed behavior of the infrared…
Pressure-induced metallization and structural phase transition of the Mott-Hubbard insulator TiOBr
C. A. Kuntscher, S. Frank, A. Pashkin +9
We investigated the pressure-dependent optical response of the low-dimensional Mott-Hubbard insulator TiOBr by transmittance and reflectance measurements in the infrared and visibl…
Pressure-induced changes in the optical properties of quasi-one-dimensional -NaVO
Simone Frank, Christine A. Kuntscher, Ivan Gregora +2
The pressure-induced changes in the optical properties of -NaVO single crystals at room temperature were studied by polarization-dependent Raman and far-infrare…