781 citations · 3.2k across the 24 of their papers we have counts for
24 papers
Coupling of magnetic and lattice collective excitations in the 2D van der Waals antiferromagnet FePS
Kartik Panda, Itzik Kapon, Dumitru Dumcenco +3
We combine polarized infrared magneto-transmission and Faraday angle rotation measurements to map the collective excitations of the van der Waals antiferromagnet FePS. Below th…
Band Gap Opening in Bilayer Graphene-CrCl/CrBr/CrI van der Waals Interfaces
Giulia Tenasini, David Soler-Delgado, Zhe Wang +10
We report experimental investigations of transport through bilayer graphene (BLG)/chromium trihalide (CrX; X=Cl, Br, I) van der Waals interfaces. In all cases, a large charge t…
Controlling magnetism with light in a zero orbital angular momentum antiferromagnet
Mattias Matthiesen, Jorrit R. Hortensius, Samuel Mañas-Valero +6
Antiferromagnetic materials feature intrinsic ultrafast spin dynamics, making them ideal candidates for future magnonic devices operating at THz frequencies. A major focus of curre…
Probing magnetism in exfoliated VI layers with magnetotransport
David Soler-Delgado, Feng-rui Yao, Dumitru Dumcenco +6
We perform magnetotransport experiments on VI multilayers, to investigate the relation between ferromagnetism in bulk and in exfoliated layers. The magnetoconductance measured…
Magnetization dependent tunneling conductance of ferromagnetic barriers
Zhe Wang, Ignacio Gutiérrez-Lezama, Dumitru Dumcenco +6
Recent experiments on van der Waals antiferrmagnets such as CrI3, CrCl3 and MnPS3 have shown that using atomically thin layers as tunnel barriers and measuring the temperature (…
Strongly coupled coherent phonons in single-layer MoS
C. Trovatello, H. P. C. Miranda, A. Molina-Sánchez +15
We present a transient absorption setup combining broadband detection over the visible-UV range with high temporal resolution (20fs) which is ideally suited to trigger and de…
Determining the phase diagram of atomically thin layered antiferromagnet CrCl
Zhe Wang, Marco Gibertini, Dumitru Dumcenco +4
Changes in the spin configuration of atomically-thin, magnetic van-der-Waals multilayers can cause drastic modifications in their opto-electronic properties. Conversely, the opto-e…
Spin-flop transition in atomically thin MnPS crystals
Gen Long, Hugo Henck, Marco Gibertini +6
The magnetic state of atomically thin semiconducting layered antiferromagnets such as CrI and CrCl can be probed by forming tunnel barriers and measuring their resistance a…
Intervalley Scattering of Interlayer Excitons in a MoS/MoSe/MoS Heterostructure in High Magnetic Field
Alessandro Surrente, Lukasz Klopotowski, Nan Zhang +9
Degenerate extrema in the energy dispersion of charge carriers in solids, also referred to as valleys, can be regarded as a binary quantum degree of freedom, which can potentially…
Probing the inter-layer exciton physics in a MoS/MoSe/MoS van der Waals heterostructure
M. Baranowski, A. Surrente, L. Klopotowski +9
Stacking atomic monolayers of semiconducting transition metal dichalcogenides (TMDs) has emerged as an effective way to engineer their properties. In principle, the staggered band…
High Throughput Characterization of Epitaxially Grown Single-Layer MoS2
Foad Ghasemi, Riccardo Frisenda, Dumitru Dumcenco +3
The growth of single-layer MoS2 with chemical vapor deposition is an established method that can produce large-area and high quality samples. In this article, we investigate the ge…
Defect healing and charge transfer mediated valley polarization in MoS/MoSe/MoS trilayer van der Waals heterostructures
Alessandro Surrente, Dumitru Dumcenco, Zhuo Yang +7
Monolayer transition metal dichalcogenides (TMDC) grown by chemical vapor deposition (CVD) are plagued by a significantly lower optical quality compared to exfoliated TMDC. In this…
Dark excitons and the elusive valley polarization in transition metal dichalcogenides
M. Baranowski, A. Surrente, D. K. Maude +7
A rate equation model for the dark and bright excitons kinetics is proposed which explains the wide variation in the observed degree of circular polarization of the PL emission in…
Micro-reflectance and transmittance spectroscopy: a versatile and powerful tool to characterize 2D materials
Riccardo Frisenda, Yue Niu, Patricia Gant +9
Optical spectroscopy techniques such as differential reflectance and transmittance have proven to be very powerful techniques to study 2D materials. However, a thorough description…
Disorder engineering and conductivity dome in ReS2 with electrolyte gating
Dmitry Ovchinnikov, Fernando Gargiulo, Adrien Allain +5
Atomically thin rhenium disulphide (ReS2) is a member of the transition metal dichalcogenide (TMDC) family of materials characterized by weak interlayer coupling and a distorted 1T…
Electroabsorption in MoS
Daniele Vella, Dmitry Ovchinnikov, Nicola Martino +8
To translate electrical into optical signals one uses the modulation of either the refractive index or the absorbance of a material by an electric field. Contemporary electroabsorp…
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…
High Responsivity, Large-Area Graphene/MoS2 Flexible Photodetectors
D. De Fazio, I. Goykhman, M. Bruna +9
We present flexible photodetectors (PDs) for visible wavelengths fabricated by stacking centimetre-scale chemical vapour deposited (CVD) single layer graphene (SLG) and single laye…
Identification of single nucleotides in MoS2 nanopores
Jiandong Feng, Ke Liu, Roman D. Bulushev +4
Ultrathin membranes have drawn much attention due to their unprecedented spatial resolution for DNA nanopore sequencing. However, the high translocation velocity (3000-50000 nt/ms)…
Electrochemical reaction in single layer MoS2: nanopores opened atom by atom
J. Feng, K. Liu, M. Graf +8
Ultrathin nanopore membranes based on 2D materials have demonstrated ultimate resolution toward DNA sequencing. Among them, molybdenum disulphide (MoS2) shows long-term stability a…
Avalanche photodiodes based on MoS2/Si heterojunctions
Oriol Lopez-Sanchez, Dumitru Dumcenco, Edoardo Charbon +1
Avalanche photodiodes (APDs) are the semiconducting analogue of photomultiplier tubes offering very high internal current gain and fast response. APDs are interesting for a wide ra…
Electrical Transport Properties of Single-Layer WS2
Dmitry Ovchinnikov, Adrien Allain, Ying-Sheng Huang +2
We report on the fabrication of field-effect transistors based on single and bilayers of the semiconductor WS2 and the investigation of their electronic transport properties. We fi…
Large-area Epitaxial Monolayer MoS2
Dumitru Dumcenco, Dmitry Ovchinnikov, Kolyo Marinov +7
Two-dimensional semiconductors such as MoS2 are an emerging material family with wide-ranging potential applications in electronics, optoelectronics and energy harvesting. Large-ar…
Atomic mechanism of phase transition between metallic and semiconducting MoS2 single-layers
Yung-Chang Lin, Dumitru O. Dumcenco, Ying-Sheng Huang +1
Structural transformation between metallic (1T) and semiconducting (2H) phases of single-layered MoS2 was systematically investigated by an in situ STEM with atomic precision. The…