34 citations · 61 across the 8 of their papers we have counts for
8 papers
Quasiparticle phono-conversion: filming carriers coalescing into excitons
Enrico Perfetto, Takumi Fukuda, Xing Zhu +12
Condensed matter physics is replete with phenomena involving high-energy free particles coalescing into low-energy bound few-particle states. While the cooling of the individual pa…
Role of interlayer shear phonons on lattice symmetry switching in the transition metal dichalcogenide WTe
Mizuki Akei, Takumi Fukuda, Yu Mizukoshi +2
Coherent phonon control using ultrashort pulse trains is the key to realizing structural phase transitions in solids by non-thermal pathways. By combining double-pulse excitation a…
Spin dependent bandgap renormalization and state filling effect in BiSe observed by ultrafast Kerr rotation
Kazuhiro Kikuchi, Yu Mizukoshi, Takumi Fukuda +2
We investigate the ultrafast spin dynamics of the prototypical topological insulator using time-resolved Kerr-rotation (polarization-change) measurements ac…
Ultrafast melting of charge-density wave fluctuations at room temperature in monitored under non-equilibrium conditions
Yu Mizukoshi, Takumi Fukuda, Yuta Komori +3
We investigate the ultrafast lattice dynamics in using femtosecond reflection pump-probe and pump-pump-probe techniques at room temperature. The time-domain signals a…
Terahertz emission from transient currents and coherent phonons in layered MoSe and WSe
Jessica Afalla, Joselito Muldera, Semmi Takamizawa +4
Terahertz (THz) time-domain emission spectroscopy was performed on layered 2H-MoSe2 and 2H-WSe2. The THz emission shows an initial cycle attributed to surge currents and is followe…
Ultrafast dynamics of coherent phonons and phonon-polaritons in lithium niobate crystals
Aizitiaili Abulikemu, Takumi Fukuda, Muneaki Hase
This study investigates the ultrafast dynamics of coherent phonons and phonon-polaritons in lithium niobate (LiNbO) crystals using reflective pump-probe spectroscopy with 25-…
Photo-induced Tellurium segregation in
Takumi Fukuda, Ryota Kaburauchi, Yuta Saito +4
We report on the coherent phonon spectroscopy of polymorphic single crystals using a femtosecond-pulsed laser to investigate the relationship between structural p…
Ultrafast dynamics of the low frequency shear mode in
T. Fukuda, K. Makino, Y. Saito +4
We report on the dynamics of coherent phonons in semimetal 1T'-MoTe2 using femtosecond pump-probe spectroscopy. On an ultrafast sub-picosecond time scale at room temperature, a low…