Category Archives: research

Bernal Bilayer Graphene Exhibits Magnetic Bulk Photovoltaic Effect with Linearly Growing Current

The interplay between magnetism and light absorption holds promise for novel photovoltaic technologies, and recent research explores this connection within the unique structure of graphene. Yuncheng Mao and Claudio Attaccalite, both from CNRS/Aix-Marseille Université, investigate how magnetic fields influence the bulk photovoltaic effect in Bernal bilayer graphene, a material formed by stacking two graphene layers…. Read More

Lumen is back

After many years the Lumen code is back.The new version of Lumen is based on Yambo 5.3.0. You can find our new code on GitLab at: https://gitlab.com/lumen-code/ Soon we will release a stable version of the code

Shift current from models to ab-initio

Here my new presentation on “Shift current from models to ab-initio”. In this presentation I discuss our recent results on shift-current in twisted 3-layer graphene and Janus Monolayer Transition-Metal Dichalcogenides. In the first work we highlight the importance of density of state plus quantum geometric effects for the SC generaiton, while in the second we… Read More

New poster on: tunable SHG in 2D crystals

A new poster for the general conference of the French Physical Society on: tunable second harmonic generation in 2D crystals. In this work we investigate two possible mechanisms to tune SHG in 2D crystals: 1) the breaking of inversion symmetry by an external field 2) the doping effects on the excitonic SHG response. Poster source… Read More

Sum Frequency Generation

In this talk I present our new results on sum/difference frequency generation in 2D material. We also discuss the possibility to tune non-linear response using static or ThZ electric fields, you can find the slides of my talk here:SumFrequencyGeneration.odp and the two reference papers here: Sum frequency generation from real-time simulations in two-dimensional crystals MN…. Read More

The TIMES network

Advanced quantum materials, and ultra-fast phenomena are new areas around which the Aix-Marseille University will train European doctoral students to their high qualification through the Marie Curie actions. This has been resolved by the European Research Executive Agency (REA) in the last call ‘MSCA Doctoral Networks’.In particular the CINaM and PIIM laboratory in Marseille will… Read More

Exciton-phonon coupling tutorial

A new tutorial on exciton-phonon coupling in Yambo is available. In this tutorial we will show how to generate exciton-phonon matrix elements and calculate phonon-assisted absorption and emission. In the last part of the tutorial the exciton-phonon matrix elements will be used to calculate exciton life-time. The tutorial is based on a preliminary version of… Read More

Concours : Directeur de recherche au CNRS

Cette année, j’ai enfin réussi le concours de directeur de recherche du CNRS en section 3, après six tentatives.Dans cet article, je souhaite partager les différents projets de recherche et présentations que j’ai utilisés au fil des années, en espérant qu’ils puissent être utiles à d’autres candidats. Presentations: Electronic and optical properties of nano-materials (2023)… Read More