activity
20152022
most citedAnisotropy, phonon modes, and free charge carrier parameters in monoclinic -gallium oxide single crystals

216 citations · 422 across the 14 of their papers we have counts for

collaborators

15 papers

physics.gen-ph2022

A Torsion-Driven Generalisation of Unimodular Gravity

Sean Knight, Navjot Gadda

We present an Einstein Cartan Kalb Ramond model that yields a generalisation of unimodular gravity in which the dynamics are driven by torsion rather than curvature. Using a simple…

hep-th2022

Evaporation of Black Holes in Anti-de Sitter Space-time

Sean Knight, Navjot Gadda

We study the thermodynamics of an uncharged, non-rotating BTZ black hole. In addition to the thermal properties, we are interested in the phase transition between two locally therm…

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 -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…

cond-mat.mtrl-sci2021★ 23 cited

Optical phonon modes, static and high frequency dielectric constants, and effective electron mass parameter in cubic InO

Megan Stokey, Rafal Korlacki, Sean Knight +8

A complete set of all optical phonon modes predicted by symmetry for bixbyite structure indium oxide is reported here from a combination of far-infrared and infrared spectroscopic…

cond-mat.mtrl-sci2020

The anisotropic quasi-static permittivity of single-crystal beta-Ga2O3

Prashanth Gopalan, Sean Knight, Ashish Chanana +11

The quasi-static anisotropic permittivity parameters of electrically insulating gallium oxide (beta-Ga2O3) were determined by terahertz spectroscopy. Polarization-resolved frequenc…