253 citations · 349 across the 7 of their papers we have counts for
7 papers
Terahertz electron paramagnetic resonance generalized spectroscopic ellipsometry: The magnetic response of the nitrogen defect in 4H-SiC
Mathias Schubert, Sean Knight, Steffen Richter +8
We report on terahertz (THz) electron paramagnetic resonance generalized spectroscopic ellipsometry (THz-EPR-GSE). Measurements of the field and frequency dependencies of the magne…
Infrared dielectric functions and Brillouin zone center phonons of -GaO compared to -AlO
Megan Stokey, Rafal Korlacki, Matthew Hilfiker +11
We determine the anisotropic dielectric functions of rhombohedral -GaO by far-infrared and infrared generalized spectroscopic ellipsometry and derive all transverse opti…
Ultrafast dynamics of hot charge carriers in an oxide semiconductor probed by femtosecond spectroscopic ellipsometry
Steffen Richter, Oliver Herrfurth, Shirly Espinoza +8
Many linked processes occur concurrently in strongly excited semiconductors, such as interband and intraband absorption, scattering of electrons and holes by the heated lattice, Pa…
Optical properties of thin-film vanadium dioxide from the visible to the far infrared
Chenghao Wan, Zhen Zhang, David Woolf +13
The insulator-to-metal transition (IMT) in vanadium dioxide (VO2) can enable a variety of optics applications, including switching and modulation, optical limiting, and tuning of o…
Exceptional points in anisotropic planar microcavities
Steffen Richter, Tom Michalsky, Chris Sturm +3
Planar microcavities allow the control and manipulation of spin-polarization, manifested in phenomena like the optical spin Hall effect due to the intrinsic polarization mode split…
Fundamental absorption edges in heteroepitaxial YBiO thin films
Marcus Jenderka, Steffen Richter, Michael Lorenz +1
The dielectric function of heteroepitaxial YBiO grown on -AlO single crystals via pulsed laser deposition is determined in the spectral range from 0.03 eV to 4.5 eV…
Antiferromagnetic phase transition in the temperature-dependent NIR-VUV dielectric function of hexagonal YMnO
Steffen Richter, Stefan G. Ebbinghaus, Marius Grundmann +1
Hexagonal YMnO is well known for the co-occurrence of ferroelectricity and antiferromagnetism at low temperatures. Using temperature-dependent spectroscopic ellipsometry at an…