Publications de Dumitru Dumcenco

Persistence of Magnetism in Atomically Thin MnPS3 Crystals

Marco Gibertini, Dumitru Dumcenco, Zhe Wang

The magnetic state of atomically thin semiconducting layered antiferromagnets such as CrI3 and CrCI3 can be probed by forming tunnel barriers and measuring their resistance as a function of magnetic field (H) and temperature (T). This is possible because t ...

AMER CHEMICAL SOC2020

Strongly Coupled Coherent Phonons in Single-Layer MoS2

Andras Kis, Dumitru Dumcenco

We present a transient absorption setup combining broadband detection over the visible-UV range with high temporal resolution (similar to 20 fs) which is ideally suited to trigger and detect vibrational coherences in different classes of materials. We gene ...

AMER CHEMICAL SOC2020

Self-sensing, tunable monolayer MoS2 nanoelectromechanical resonators

Andras Kis, Dumitru Dumcenco, Guilherme Migliato Marega, Sajedeh Manzeli

Excellent mechanical properties and the presence of piezoresistivity make single layers of transition metal dichalcogenides (TMDCs) viable candidates for integration in nanoelectromechanical systems (NEMS). We report on the realization of electromechanical ...

Nature Research2019

Determining the phase diagram of atomically thin layered antiferromagnet CrCl3

Marco Gibertini, Dumitru Dumcenco, Zhe Wang

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-electronic response of these systems provides information about the magnetic ...

Nature Publishing Group2019

Excitonic Effects in Single Layer MoS2 Probed by Broadband Two-dimensional Electronic Spectroscopy

Andras Kis, Dumitru Dumcenco

We exploit two-dimensional electron spectroscopy to coherently excite the A and B excitons in monolayer MoS2. Combined with simulations, our data distinguish ultrafast bright excitons decoherence and sub-ps scattering decays to dark excitons. (c) 2019 The ...

IEEE2019

Quantitative Nanoscale Absorption Mapping: A Novel Technique To Probe Optical Absorption of Two-Dimensional Materials

Anna Fontcuberta i Morral, Andras Kis, Dumitru Dumcenco, Luca Francaviglia, Marco Negri

Two-dimensional semiconductors, in particular transition metal dichalcogenides and related heterostructures, have gained increasing interest as they constitute potential new building blocks for the next generation of electronic and optoelectronic applicati ...

American Chemical Society (ACS)2019

Impact of photodoping on inter- and intralayer exciton emission in a MoS2/MoSe2/MoS2 heterostructure

Andras Kis, Dumitru Dumcenco, Alessandro Surrente, Yen-Cheng Kung

AIP American Institute of Physics2018

Intervalley Scattering of Interlayer Excitons in a MoS2/MoSe2/MoS2 Heterostructure in High Magnetic Field

Andras Kis, Dumitru Dumcenco, Alessandro Surrente, Yen-Cheng Kung

American Chemical Society (ACS)2018

Air and Water-Stable n-Type Doping and Encapsulation of Flexible MoS2 Devices with SU8

Andras Kis, Yen-Cheng Kung, Georg Fantner, Dumitru Dumcenco, Nahid Hosseini

2018

Geometrical Effect in 2D Nanopores

Aleksandra Radenovic, Andras Kis, Duncan Thomas Lindsay Alexander, Vasiliki Tileli, Martina Lihter, Ke Liu, Dumitru Dumcenco, Davide Deiana, Aditya Sarathy

A long-standing problem in the application of solid-state nanopores is the lack of the precise control over the geometry of artificially formed pores compared to the well-defined geometry in their biological counterpart, that is, protein nanopores. To date ...

American Chemical Society (ACS)2017