• Publications
  • Influence
Single photon emitters in exfoliated WSe2 structures.
Complete optical micro-spectroscopy studies of thin layers of tungsten diselenide (WSe2), a representative semiconducting dichalcogenide with a bandgap in the visible spectral range, discover centres that, at low temperatures, give rise to sharp emission lines (100 μeV linewidth).
Magnetic 2D materials and heterostructures
The difference between magnetic states in 2D materials and in bulk crystals is discussed and the range of new van der Waals heterostructures that became possible with the appearance of 2D magnets are offered, offering new perspectives in this rapidly expanding field.
Optical properties of atomically thin transition metal dichalcogenides: observations and puzzles
Abstract Recent results on the optical properties of monolayer and few layers of semiconducting transition metal dichalcogenides are reviewed. Experimental observations are presented and discussed in
Excitonic resonances in thin films of WSe2: from monolayer to bulk material.
We present optical spectroscopy (photoluminescence and reflectance) studies of thin layers of the transition metal dichalcogenide WSe2, with thickness ranging from mono- to tetra-layer and in the
Exciton band structure in layered MoSe2: from a monolayer to the bulk limit.
We present the micro-photoluminescence (μPL) and micro-reflectance contrast (μRC) spectroscopy studies on thin films of MoSe(2) with layer thicknesses ranging from a monolayer (1L) up to 5L. The
Strained Bubbles in van der Waals Heterostructures as Local Emitters of Photoluminescence with Adjustable Wavelength
The possibility to tailor photoluminescence (PL) of monolayer transition metal dichalcogenides (TMDCs) using external factors such as strain, doping, and external environment is of significant
Radiatively Limited Dephasing and Exciton Dynamics in MoSe2 Monolayers Revealed with Four-Wave Mixing Microscopy
By implementing four-wave mixing (FWM) microspectroscopy, coherence and population dynamics of the exciton transitions in monolayers of MoSe2 are measured, revealing their dephasing times T2 and radiative lifetime T1 in a subpicosecond range and indicating radiatively limited dephase at a temperature of 6 K.
Picosecond charge variation of quantum dots under pulsed excitation
We present a spectroscopic study of excitation dynamics in self-assembled CdTe/ZnTe quantum dots. Insight into details of kinetics is obtained from the time-resolved microphotoluminescence, single
Resonantly hybridized excitons in moiré superlattices in van der Waals heterostructures
It is demonstrated that excitonic bands in MoSe2/WS2 heterostructures can hybridize, resulting in a resonant enhancement of moiré superlattice effects, which underpin strategies for band-structure engineering in semiconductor devices based on van der Waals heterostructure.
Resonantly hybridised excitons in moiré superlattices in van der Waals heterostructures
Citation for published version (APA): Alexeev, E. M., Ruiz-Tijerina, D., Danovich, M., Hamer, M., Terry, D., Nayak, P. K., Ahn, S., Pak, S., Lee, J., Sohn, J. I., Molas, M. R., Koperski, M.,