Our new work on “Temperature dependent nonlinear optics” is finally online. In this work we combine many-body perturbation theory for the electron-phonon coupling with real-time dynamics for the electrons in such a way to describe the temperature effects in the non-linear response. The preprint is available here: https://arxiv.org/abs/2609.07796v1
After 7 months from the first version of Lumen the 2.0 we release a new version the 2.1. This version fixes different bugs in compilation and executions but it also introduce different new features as non-linear response within the Floquet formalism or the symmetry analysis for the excitons. Release notes can be found here:https://www.lumen-code.org/wiki/index.php?title=Lumen_2.1 and… Read More
New poster on our work on phonon-assisted light absorption and emission in cubic Boron Nitride realized by Ashwin Pillai for the Young Research Meeting is available here: ODP PDF
Very proud to have be an editor for SciPost since the early days of this ambitious and successful project
I just received my personalized certificate for the service I provided to ACS journals as referee and to the scientific community. Generally speaking, if I have the time, I’m happy to write reviews for journals published by scientific societies, but I always avoid writing peer reviews for journals run by private companies that make a… Read More
In this talk I present our study of shift current(SC) response in twisted bi-layer(TBG) and twisted tri-layer graphene (TTG). We found that TTG as an ideal platform for the observation of a highly controllable SC conductivity in the THz/infrared frequency regime. At small angle it is possible to promotes the far-infrared THz SC up to… Read More
A very first draft of the lecture notes of the course “Small vibrations: introductory course on phonons in solids” are available online: https://www.attaccalite.com/lecture_notes/main.pdf In this course we present: introduction to phonons; the Born–Oppenheimer Approximation; polar materials and LO-TO splitting; infrared and Raman spectroscopy; electron-phonon coupling; an-harmonic effects.
The Frontiers in Ultrafast Phenomena in Quantum Materials Workshop 2026 will take place at the INFN–LNF Laboratories in Frascati, from Tuesday 21 April to Friday 24 April 2026. The event is organized by the TIMES Doctoral Network, funded by the European Union under the Marie Skłodowska-Curie Actions program. Its mission is to train a new… Read More
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
My new two lectures notes that I gave to the Hanami school “Materials Science from First Principles: Materials Scientist Toolbox” in Paris are available online: Linear response TheoryIntroduction to the Bethe-Salpeter Equation