221 citations · 363 across the 5 of their papers we have counts for
5 papers
THz-pump -- THz-probe spectroscopy of semiconductors at high field strengths
Matthias C. Hoffmann, Janos Hebling, Harold Y. Hwang +2
Pumping n-type GaAs and InSb with ultrafast THz pulses having intensities higher than 150 MW/cm2 shows strong free carrier absorption saturation at temperatures of 300 K and 200 K…
Nonlinear Optical Response of SrTiO3/LaAlO3 Superlattices
N. Ogawa, K. Miyano, M. Hosoda +4
The electronic symmetry of the SrTiO3/LaAlO3 interface was investigated by optical second harmonic generation, using superlattices with varying periodicity to study the evolution o…
Impact ionization in InSb probed by THz-pump THz-probe spectroscopy
Matthias C. Hoffmann, Janos Hebling, Harold Y. Hwang +2
Picosecond carrier dynamics in indium antimonide (InSb) following excitation by below-bandgap broadband far infrared radiation were investigated at 200 K and 80 K. Using a novel TH…
Electronic structure of the SrTiO/LaAlO interface revealed by resonant soft x-ray scattering
H. Wadati, D. G. Hawthorn, J. Geck +11
We investigated the electronic structure of the SrTiO/LaAlO superlattice (SL) by resonant soft x-ray scattering. The (003) peak, which is forbidden for our "ideal" SL struc…
Interface Magnetoresistance in Manganite-Titanate Heterojunctions
T. Susaki, N. Nakagawa, H. Y. Hwang
We have found that the current- voltage characteristics of La0.7Sr0.3MnO3(-delta)/Nb:SrTiO3 rectifying junctions are quantitatively well-described by (thermally-assisted) tunneling…