411 citations · 1.4k across the 19 of their papers we have counts for
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Dissociation of one-dimensional excitons by static electric field
Adriana García, Alexander López, Jorge Quereda +1
The quantum states of an electron-hole pair in one-dimensional semiconductors under a static electric field are theoretically analyzed using a two-band model with on-site Coulomb i…
Quantum valley pseudospin controlled by strain
Maurício F. C. Martins Quintela, Miguel Sá, Alejandro J. Uría-Álvarez +5
Valleytronics, as an alternative to traditional electronics or spintronics, is based on the encoding of quantum information in pseudospin valley quantum numbers, rather than in cha…
Locally Phase-Engineered MoTe for Near-Infrared Photodetectors
Jan Hidding, Cédric A. Cordero-Silis, Daniel Vaquero +3
Transition metal dichalcogenides (TMDs) are ideal systems for two-dimensional (2D) optoelectronic applications, owing to their strong light-matter interaction and various band gap…
Fast response photogating in monolayer MoS2 phototransistors
Daniel Vaquero, Vito Clericò, Juan Salvador-Sánchez +6
Two-dimensional transition metal dichalcogenide (TMD) phototransistors have been object of intensive research during the last years due to their potential for photodetection. Photo…
Bilayer h-BN Barriers for Tunneling Contacts in Fully-Encapsulated Monolayer Field-Effect Transistors
Talieh S. Ghiasi, Jorge Quereda, Bart J. van Wees
The performance of electronic and spintronic devices based on two-dimensional semiconductors (2D SC) is largely dependent on the quality and resistance of the metal/SC electrical c…
Strain engineering of Schottky barriers in single- and few-layer MoS2 vertical devices
Jorge Quereda, Juan José Palacios, Nicolás Agräit +2
We study the effect of local strain in the electronic transport properties of vertical metal-atomically thin MoS2-metal structures. We use a conductive atomic force microscope tip…
Strong quantum confinement effect in the optical properties of ultrathin α-In2Se3
Jorge Quereda, Robert Biele, Gabino Rubio-Bollinger +3
The effect of quantum confinement in the optical absorption spectra of atomically thin α-In2Se3 crystals is studied, observing a huge thickness-dependent shift in the optical band…
Enhanced Visibility of MoS2, MoSe2, WSe2 and Black Phosphorus: Making Optical Identification of 2D Semiconductors Easier
Gabino Rubio-Bollinger, Ruben Guerrero, David Perez de Lara +5
We explore the use of Si3N4/Si substrates as a substitute of the standard SiO2/Si substrates employed nowadays to fabricate nanodevices based on 2D materials. We systematically stu…
Strong modulation of optical properties in black phosphorus through strain-engineered rippling
Jorge Quereda, Pablo San-José, Vincenzo Parente +7
Controlling the bandgap through local-strain engineering is an exciting avenue for tailoring optoelectronic materials. Two-dimensional crystals are particularly suited for this pur…
Spatially resolved optical absorption spectroscopy of single- and few-layer MoS2 by hyperspectral imaging
Andres Castellanos-Gomez, Jorge Quereda, Herko P. van der Meulen +2
The possibility of spatially resolving the optical properties of atomically thin materials is especially appealing as they can be modulated at the micro- and nanoscale by reducing…
Single-layer MoS2 roughness and sliding friction quenching by interaction with atomically flat substrates
Jorge Quereda, Andres Castellanos-Gomez, Nicolás Agraït +1
We experimentally study the surface roughness and the lateral friction force in single-layer MoS2 crystals deposited on different substrates: SiO2, mica and hexagonal boron nitride…
Fast and reliable identification of atomically thin layers of TaSe2 crystals
Andres Castellanos-Gomez, Efrén Navarro-Moratalla, Guillermo Mokry +7
Deposition of clean and defect-free atomically thin two-dimensional crystalline flakes on surfaces by mechanical exfoliation of layered bulk materials has proven to be a powerful t…