147 citations · 1.1k across the 56 of their papers we have counts for
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Zener Tunneling Breakdown in Phase-Change Materials Revealed by Intense Terahertz Pulses
Yasuyuki Sanari, Takehiro Tachizaki, Yuta Saito +8
We have systematically investigated the spatial and temporal dynamics of crystallization that occurs in the phase-change material Ge2Sb2Te5 upon irradiation with an intense THz pul…
Ultrafast asymmetric Rosen-Zener-like coherent phonon responses observed in silicon
Yohei Watanabe, Ken-ichi Hino, Nobuya Maeshima +2
We investigate the spectral profiles of time signals attributed to coherent phonon generation in an undoped Si crystal. Here, the retarded longitudinal-optical (LO) phonon Green fu…
Ultrafast Dynamics of Electron-phonon Coupling in Transition-metal Dichalcogenides
Kotaro Makino, Yuta Saito, Shuuto Horii +6
Time-domain femtosecond laser spectroscopic measurements of the ultrafast lattice dynamics in 2H-MoTe2 bulk crystals were carried out to understand the carrier-phonon interactions…
Coherent Dirac plasmons in topological insulators
Richarj Mondal, Akira Arai, Yuta Saito +4
We explore the ultrafast reflectivity response from photo-generated coupled phonon-surface Dirac plasmons in SbTe topological insulators several quintuple layers thick. The…
A cascading nonlinear magneto-optical effect in topological insulators
Richarj Mondal, Yuta Saito, Yuki Aihara +5
Topological insulators (TIs) are characterized by possessing metallic (gapless) surface states and a finite band-gap state in the bulk. As the thickness of a TI layer decreases dow…