S. Richter

activity

20152022

most citedTerahertz electron paramagnetic resonance generalized spectroscopic ellipsometry: The magnetic response of the nitrogen defect in 4H-SiC

19 citations · 19 across the 3 of their papers we have counts for

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cond-mat.mtrl-sci2022★ 19 cited

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…

cond-mat.mtrl-sci2021

Infrared dielectric functions and Brillouin zone center phonons of $α$ -Ga $_{2}$ O $_{3}$ compared to $α$ -Al $_{2}$ O $_{3}$

Megan Stokey, Rafal Korlacki, Matthew Hilfiker +11

We determine the anisotropic dielectric functions of rhombohedral $α$ -Ga $_{2}$ O $_{3}$ by far-infrared and infrared generalized spectroscopic ellipsometry and derive all transverse opti…

cond-mat.mtrl-sci2019

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…

cond-mat.mtrl-sci2015

Antiferromagnetic phase transition in the temperature-dependent NIR-VUV dielectric function of hexagonal YMnO $_{3}$

Steffen Richter, Stefan G. Ebbinghaus, Marius Grundmann +1

Hexagonal YMnO $_{3}$ is well known for the co-occurrence of ferroelectricity and antiferromagnetism at low temperatures. Using temperature-dependent spectroscopic ellipsometry at an…

Terahertz electron paramagnetic resonance generalized spectroscopic ellipsometry: The magnetic response of the nitrogen defect in 4H-SiC

Infrared dielectric functions and Brillouin zone center phonons of α-Ga2​O3​ compared to α-Al2​O3​

Ultrafast dynamics of hot charge carriers in an oxide semiconductor probed by femtosecond spectroscopic ellipsometry

Antiferromagnetic phase transition in the temperature-dependent NIR-VUV dielectric function of hexagonal YMnO3​

Infrared dielectric functions and Brillouin zone center phonons of $α$ -Ga $_{2}$ O $_{3}$ compared to $α$ -Al $_{2}$ O $_{3}$

Antiferromagnetic phase transition in the temperature-dependent NIR-VUV dielectric function of hexagonal YMnO $_{3}$