3 citations · 3 across the 1 of their papers we have counts for
7 papers
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…
How pump-probe differential reflectivity at negative delay yields the perturbed free-induction-decay: Theory of the experiment and its verification
Richarj Mondal, Basabendra Roy, Bipul Pal +1
While time-resolved pump-probe differential reflectivity and transmitivity measurements are routinely used to monitor the population relaxation dynamics on the subpicosecond time s…
Distinguishing quantum dot-like localized states from quantum well-like extended states across the exciton emission line in a quantum well
Sumi Bhuyan, Richarj Mondal, Bipul Pal +1
We have closely examined the emission spectrum at the heavy-hole exciton resonance in a high-quality GaAs multi-quantum well (MQW) sample using picosecond excitation-correlation ph…
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…