257 citations · 678 across the 17 of their papers we have counts for
17 papers
All-optical detection of periodic structure of chalcogenide superlattice using coherent folded acoustic phonons
Takara Suzuki, Yuta Saito, Paul Fons +3
Chalcogenide superlattices (SL) consist of alternate stacking of GeTe and SbTe layers. The structure can become a 3D topological insulator depending on the constituent…
A topological phase buried in a chalcogenide superlattice monitored by a helicity dependent Kerr measurement
Richarj Mondal, Yuki Aihara, Yuta Saito +4
Chalcogenide superlattices (SL), formed by the alternate stacking of GeTe and SbTe layers, also referred to as interfacial phase change memory (iPCM), are a leading can…
Photon Energy Dependence of Kerr Rotation in Chalcogenide Superlattices
Takara Suzuki, Richarj Mondal, Yuta Saito +5
We report on pump-probe based helicity dependent time-resolved Kerr measurements of chalcogenide superlattices, consisting of alternately stacked GeTe and SbTe layers u…
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…
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…