121 citations · 1k across the 36 of their papers we have counts for
16 papers · 1 filter
Phonon-pump electronic-probe study of methylammonium lead iodide reveals electronically decoupled organic and inorganic sublattices
Peijun Guo, Arun Mannodi-Kanakkithodi, Jue Gong +10
Organic-inorganic hybrid perovskites such as methylammonium lead iodide (CH3NH3PbI3) are game-changing semiconductors for solar cells and light-emitting devices owing to their exce…
Vacancy Relaxation in Cuprous Oxide (CuO)
Laszlo Frazer, Kelvin B. Chang, Richard D. Schaller +2
Phonons are produced when an excited vacancy in cuprous oxide (CuO) relaxes. Time resolved luminescence was used to find the excited copper vacancy (acceptor) and oxygen vacanc…
Spin Transport through the metallic antiferromagnet FeMn
H. Saglam, W. Zhang, M. B. Jungfleisch +4
We investigate spin transport through metallic antiferromagnets using measurements based on spin pumping combined with inverse spin Hall effects in Ni80Fe20/FeMn/W trilayers. The r…
All electrical manipulation of magnetization dynamics in a ferromagnet by antiferromagnets with anisotropic spin Hall effects
Wei Zhang, Matthias B. Jungfleisch, Frank Freimuth +6
We investigate spin-orbit torques of metallic CuAu-I-type antiferromagnets using spin-torque ferromagnetic resonance tuned by a dc-bias current. The observed spin torques predomina…
Evaluation of defects in cuprous oxide through exciton luminescence imaging
Laszlo Frazer, Erik J. Lenferink, Kelvin B. Chang +3
The various decay mechanisms of excitons in cuprous oxide (Cu2O) are highly sensitive to defects which can relax selection rules. Here we report cryogenic hyperspectral imaging of…
Photoionization cross section of 1s orthoexcitons in cuprous oxide
Laszlo Frazer, Kelvin B. Chang, Kenneth R. Poeppelmeier +1
We report measurements of the attenuation of a beam of orthoexciton-polaritons by a photoionizing optical probe. Excitons were prepared in a narrow resonance by two photon absorpti…