147 citations · 396 across the 14 of their papers we have counts for
14 papers
Robust coherent phonon mode at GaP/Si(001) heterointerface
Kunie Ishioka, Gerson Mette, Steven Youngkin +5
Lattice-matched GaP layers without extended defects can be grown on Si(001) substrate via a two-step growth procedure, consisting of low-temperature nucleation followed by high-tem…
Suppression of shear ionic motions in bismuth by coupling with large-amplitude internal displacement
Kunie Ishioka, Oleg V. Misochko
Bismuth, with its rhombohedral crystalline structure and two Raman active phonon modes corresponding to the internal displacement () and shear () ionic motions, offe…
Strongly coupled interface electronic states and interface phonon mode at GaP/Si(001)
Gerson Mette, Kunie Ishioka, Steven Youngkin +3
Ultrafast carrier and phonon dynamics at the buried heterointerface of GaP/Si(001) are investigated by means of two-color pump-probe reflectivity measurements. The carrier-induced…
Selective coupling of coherent optical phonons in YBaCuO with electronic transitions
Kunie Ishioka, Alexej Pashkin, Christian Bernhard +3
We investigate coherent lattice dynamics in optimally doped YBaCuO driven by ultrashort ( 12 fs) near infrared (NIR) and near ultraviolet (NUV) pulses. Transi…
Separation of interface and substrate carrier dynamics at a heterointerface based on coherent optical phonons
Kunie Ishioka, Ethan Angerhoffer, Christopher J. Stanton +4
Transient reflectivity spectroscopy is widely used to study ultrafast carrier- and phonon-dynamics in semiconductors. In their heterostructures, it is often not straightforward to…
Strongly Anharmonic Organic Cation Vibrations in Hybrid Lead Halide Perovskite CH3NH3PbI3 on Electronic Ground State
Kunie Ishioka, Terumasa Tadano, Masatoshi Yanagida +2
Ultrafast vibrational dynamics of inorganic-organic hybrid lead halide perovskite CH3NH3PbI$ in the room-temperature tetragonal phase is investigated under moderate photoexcitation…