56 citations · 61 across the 5 of their papers we have counts for
5 papers
Structural optimization of lattice-matched Sc0.14Al0.86N/GaN superlattices for photonic applications
Rajendra Kumar, Govardan Gopakumar, Zain Ul Abdin +2
ScxAl1-xN is an emerging III-nitride material known for its high piezoelectric coefficient and ferroelectric properties. Integration of wide-bandgap ScxAl1-xN with GaN is particula…
Pinpointing Lattice-Matched Conditions for Wurtzite ScxAl1-xN/GaN Heterostructures with X-Ray Reciprocal Space Analysis
Rajendra Kumar, Govardan Gopakumar, Zain Ul Abdin +2
Using comprehensive x-ray reciprocal space mapping, we establish the precise lattice-matching composition for wurtzite layers on (0001) GaN to be x = 0.14+/-0.01. 1…
Quasi-coherent thermal emitter based on refractory plasmonic materials
Jingjing Liu, Urcan Guler, Alexei Lagutchev +4
The thermal emission of refractory plasmonic metamaterial - a titanium nitride 1D grating - is studied at high operating temperature (540 °C). By choosing a refractory material, we…
Terahertz intersubband absorption in non-polar m-plane AlGaN/GaN quantum wells
C. Edmunds, J. Shao, M. Shirazi-HD +2
We demonstrate THz intersubband absorption (15.6-26.1 meV) in m-plane AlGaN/GaN quantum wells. We find a trend of decreasing peak energy with increasing quantum well width, in agre…
An X-ray Scattering and Simulation Study of the Ordering Kinetics in CuAu
K. R. Elder, Oana Malis, Karl Ludwig +2
A detailed numerical and experimental study of the ordering of the low temperature tetragonal phase of CuAu is presented. The numerical simulations are based on a coarse-grained fr…