2.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR773 papers
- Université Grenoble AlpesFR325 papers
- Institut National des Sciences Appliquées de ToulouseFR210 papers
- Université Joseph FourierFR194 papers
- Université Toulouse III - Paul SabatierFR170 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR134 papers
- CEA GrenobleFR112 papers
- University of WarsawPL87 papers
- Institut NéelFR84 papers
- Charles UniversityCZ80 papers
- Institut Nanosciences et CryogénieFR53 papers
- Institut polytechnique de GrenobleFR48 papers
25 papers · 2 filters
Optical properties of atomically thin transition metal dichalcogenides: Observations and puzzles
M. Koperski, M. R. Molas, A. Arora +4
Recent results on the optical properties of mono- and few-layers of semiconducting transition metal dichalcogenides are reviewed. Experimental observations are presented and discus…
Brightening of dark excitons in monolayers of semiconducting transition metal dichalcogenides
M. R. Molas, C. Faugeras, A. O. Slobodeniuk +4
We present low temperature magneto-photoluminescence experiments which demonstrate the brightening of dark excitons by an in-plane magnetic field applied to monolayers of diffe…
Puddle-induced resistance oscillations in the breakdown of the graphene quantum Hall effect
M. Yang, O. Couturaud, W. Desrat +11
We report on the stability of the quantum Hall plateau in wide Hall bars made from a chemically gated graphene film grown on SiC. The quantized plateau appears from fields $B…
Direct determination of zero-field splitting for single Co ion embedded in a CdTe/ZnTe quantum dot
J. Kobak, A. Bogucki, T. Smoleński +6
When Co impurity is embedded in semiconductor structure, crystal strain strongly influences zero-filed splitting between Co states with spin projection $S_z = \pm 3/2…
Quantum interference in a macroscopic van der Waals conductor
C. W. Rischau, S. Wiedmann, G. Seyfarth +3
Quantum corrections to charge transport can give rise to an oscillatory magnetoconductance, typically observed in mesoscopic samples with a length shorter than or comparable with t…
A microscopic model for the magnetic field driven breakdown of the dissipationless state in the integer and fractional quantum Hall effect
A. Poux, Z. R. Wasilewski, K. J. Friedland +5
Intra Landau level thermal activation, from localized states in the tail, to delocalized states above the mobility edge in the same Landau level, explains the (half width…
Magnetic-field-induced abrupt spin state transition in a quantum dot containing magnetic ions
Maciej Koperski, Tomasz Smoleński, Mateusz Goryca +3
We present the results of a comprehensive magneto-optical characterization of single CdTe quantum dots containing a few Mn2+ ions. We find that some quantum dots exhibit an unexpec…
Tuning the valley and chiral quantum state of Dirac electrons in van der Waals heterostructures
J. R. Wallbank, D. Ghazaryan, A. Misra +15
Chirality is a fundamental property of electrons with the relativistic spectrum found in graphene and topological insulators. It plays a crucial role in relativistic phenomena, suc…
Resonant quenching of Raman scattering due to out-of-plane A/A' modes in few-layer MoTe
K. Gołasa, M. Grzeszczyk, M. R. Molas +6
Temperature-dependent (5 K to 300 K) Raman scattering study of A/A' phonon modes in mono-layer (1L), bilayer (2L), trilayer (3L), and tetralayer (4L) MoTe is reporte…
Exciton-phonon relaxation bottleneck and radiative decay of thermal exciton reservoir in two-dimensional materials
A. O. Slobodeniuk, D. M. Basko
We study exciton radiative decay in a two-dimensional material, taking into account large thermal population in the non-radiative states, from which excitons are scattered into the…
Temperature-dependent magnetospectroscopy of HgTe quantum wells
A. V. Ikonnikov, S. S. Krishtopenko, O. Drachenko +16
We report on magnetospectroscopy of HgTe quantum wells in magnetic fields up to 45 T in temperature range from 4.2 K up to 185 K. We observe intra- and inter-band transitions from…
Spin Hall Magnetoresistance in a Canted Ferrimagnet
Kathrin Ganzhorn, Joseph Barker, Richard Schlitz +7
We study the spin Hall magnetoresistance effect in ferrimagnet/normal metal bilayers, comparing the response in collinear and canted magnetic phases. In the collinear magnetic phas…
Onset of exciton-exciton annihilation in single layer black phosphorus
A. Surrente, A. A. Mitioglu, K. Galkowski +5
The exciton dynamics in monolayer black phosphorus is investigated over a very wide range of photoexcited exciton densities using time resolved photoluminescence. At low excitation…
Magneto-optical signature of massless Kane electrons in Cd3As2
A. Akrap, M. Hakl, S. Tchoumakov +21
We report on optical reflectivity experiments performed on Cd3As2 over a broad range of photon energies and magnetic fields. The observed response clearly indicates the presence of…
Resonance effects in the Raman scattering of mono- and few layers MoSe
P. Soubelet, A. E. Bruchhausen, A. Fainstein +2
Using resonant Raman scattering spectroscopy with 25 different laser lines, we describe the Raman scattering spectra of mono- and multi-layers 2H-molybdenum diselenide (MoSe) a…
Experimental approval of the extended flat bands and gapped subbands in rhombohedral multilayer graphene
Y. Henni, H. P. Ojeda Collado, K. Nogajewski +6
Graphene layers are known to stack in two stable configurations, namely ABA or ABC stacking, with drastically distinct electronic properties. Unlike the ABA stacking, little has be…
The hole Fermi surface in BiSe probed by quantum oscillations
B. A. Piot, W. Desrat, D. K. Maude +4
Transport and torque magnetometry measurements are performed at high magnetic fields and low temperatures in a series of p-type (Ca-doped) BiSe crystals. The angular de…
Energy spectrum of confined positively charged excitons in single quantum dots
M. R. Molas, A. Wojs, A. A. L. Nicolet +2
A theoretical model, which relates the binding energy of a positively charged exciton in a quantum dot with the confinement energy is presented. It is shown that the binding energy…
Spin-flip processes and radiative decay of dark intravalley excitons in transition metal dichalcogenide monolayers
A. O. Slobodeniuk, D. M. Basko
We perform a theoretical study of radiative decay of dark intravalley excitons in transition metal dichalcogenide monolayers. This decay necessarily involves an electronic spin fli…
Comparison of magneto-optical properties of various excitonic complexes in CdTe and CdSe self-assembled quantum dots
J. Kobak, T. Smoleński, M. Goryca +13
We present a comparative study of two self-assembled quantum dot (QD) systems based on II-VI compounds: CdTe/ZnTe and CdSe/ZnSe. Using magneto-optical techniques we investigated a…
The excited spin-triplet state of a charged exciton in quantum dots
M. R. Molas, A. A. L. Nicolet, B. Pietka +2
We report on single-object spectroscopic studies of a characteristic set of three resonances which appear in GaAlAs/AlAs quantum dot structures. The experiments included the photol…
Magneto-excitons in large area CVD grown monolayer MoS and MoSe on sapphire
A. A. Mitioglu, K. Galkowski, A. Surrente +5
Magneto transmission spectroscopy was employed to study the valley Zeeman effect in large-area monolayer MoS and MoSe. The extracted values of the valley g-factors for…
Magnetoquantum oscillations in the resistance of metallic point contacts: Influence of nonequilibrium phonons
N. L. Bobrov, J. A. Kokkedee, N. N. Gribov +3
The amplitude of magnetoresistance quantum oscillations of Al and Be point contacts in a magnetic field parallel to the contact axis has been studied as a function of voltage appli…
Excitons in atomically thin black phosphorus
A. Surrente, A. A. Mitioglu, K. Galkowski +3
Raman scattering and photoluminescence spectroscopy are used to investigate the optical properties of single layer black phosphorus obtained by mechanical exfoliation of bulk cryst…