Concept

Twistronics

Publications associées (81)

Probing the Interlayer Exciton Physics in a MoS2/MoSe2/MoS2 van der Waals Heterostructure

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

Stacking atomic monolayers of semiconducting transition metal dichalcogenides (TMDs) has emerged as an effective way to engineer their properties. In principle, the staggered band alignment of TMD heterostructures should result in the formation of interlay ...

American Chemical Society2017

Giant apparent lattice distortions in STM images of corrugated sp2-hybridised monolayers

Alfredo Pasquarello, Harald Brune, François Patthey, Stefano Rusponi, Markus Etzkorn, Donat Fabian Natterer, Anne Lehnert, Quentin Dubout, Laurent Claude

We report on the strengths and limitations of scanning tunnelling microscopy (STM) when used for characterising atomic-scale features of quasi two-dimensional materials, such as graphene and single layers of hexagonal boron nitride, which may present stron ...

Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft2016

Graphene Field Effect Devices and Circuits

Clemens Benedict Nyffeler

Electronics today permeate our life and existence. It has become nearly impossible to evade any dependence on electronic devices that surround us every day - computers, phones, televisions. But also other objects become increasingly "smart" - watches, cars ...

EPFL2016

Electronic transport properties of vertical and lateral graphene-based heterostructures

Roberto Urcuyo Solorzano

Graphene has some drawbacks, like the absence of an electronic band gap which leads to only small gate switching ratios, and its fast carrier recombination that limits its use in optoelectronics. In order to overcome these issues, the aim of this thesis wa ...

EPFL2016

Plasmon coupling in extended structures: Graphene superlattice nanoribbon arrays

Hatice Altug, Daniel Rodrigo Lopez

Interaction between localized plasmons in isolated proximal nanostructures is a well-studied phenomenon. Here we explore plasmon-plasmon interactions in connected extended systems. Such systems can now be easily produced experimentally using graphene. Howe ...

Amer Physical Soc2016

The role of disorder in the electronic and transport properties of monolayer and bilayer graphene

Fernando Gargiulo

This thesis is devoted to the computational study of the electronic and transport properties of monolayer and bilayer graphene in the presence of disorder arising from both topological and point defects. Among the former, we study grain boundaries in monol ...

EPFL2015

Self-biased reconfigurable graphene stacks for terahertz plasmonics

Mihai Adrian Ionescu, Arnaud Magrez, Clara-Fausta Moldovan, Julien Perruisseau-Carrier, Santiago Capdevila Cascante, Laurent Syavoch Bernard

The gate-controllable complex conductivity of graphene offers unprecedented opportunities for reconfigurable plasmonics at terahertz and mid-infrared frequencies. However, the requirement of a gating electrode close to graphene and the single 'control knob ...

Nature Publishing Group2015

Electromechanical oscillations in bilayer graphene

Andras Kis, Oleg Yazyev, Gabriel Albert Autes, Fernando Gargiulo, Mahmut Tosun, Sajedeh Manzeli, Mohamed Malik Benameur

Nanoelectromechanical systems constitute a class of devices lying at the interface between fundamental research and technological applications. Realizing nanoelectromechanical devices based on novel materials such as graphene allows studying their mechanic ...

2015

Effect of the thin-film limit on the measurable optical properties of graphene

Christophe Ballif, Stefaan De Wolf, Sylvain Nicolay, Jakub Holovsky

The fundamental sheet conductance of graphene can be directly related to the product of its absorption coefficient, thickness and refractive index. The same can be done for graphene's fundamental opacity if the so-called thin-film limit is considered. Here ...

Nature Publishing Group2015

Graphene Field Effect Devices Operating in Differential Circuit Configuration

Davide Sacchetto, Yusuf Leblebici, Clemens Benedict Nyffeler

We study the concept of a basic building block for circuits using differential signaling and being based on graphene field effect devices. We fabricated a number of top-gated graphene FETs using commercially available graphene and employing electron beam l ...

Elsevier2015

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