146 citations · 500 across the 9 of their papers we have counts for
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Phonon-assisted inter-valley scattering determines ultrafast exciton dynamics in MoSe bilayers
Sophia Helmrich, Kevin Sampson, Di Huang +10
While valleys (energy extrema) are present in all band structures of solids, their preeminent role in determining exciton resonances and dynamics in atomically thin transition meta…
High phonon-limited mobility of charged and neutral excitons in mono- and bilayer MoTe2
Sophia Helmrich, Alexander W. Achtstein, Hery Ahmad +5
We analyze the lineshape of the quasiparticle photoluminescence of monolayer and bilayer molybdenum ditelluride in temperature- and excitation intensity-dependent experiments. We c…
Tuning intraband and interband transition rates via excitonic correlation in low-dimensional semiconductors
Josep Planelles, Alexander W. Achtstein, Riccardo Scott +2
We show that electron-hole correlation can be used to tune interband and intraband optical transition rates in semiconductor nanostructures with at least one weakly confined direct…
Long-Lived Valley Polarization of Intra-Valley Trions in Monolayer WSe2
Akshay Singh, Kha Tran, Mirco Kolarczik +9
We investigate valley dynamics associated with trions in monolayer tungsten diselenide (WSe2) using polarization resolved two-color pump-probe spectroscopy. When tuning the pump an…
p-State Luminescence in CdSe Nanoplatelets: The Role of Lateral Confinement and an LO Phonon Bottleneck
Alexander W. Achtstein, Riccardo Scott, Sebastian Kickhöfel +8
We report excited state emission from p-states at excitation fluences well below ground state saturation in CdSe nanoplatelets. Size dependent exciton ground state-excited state en…