Gianmarco Gatti

Cette personne n’est plus à l’EPFL

Publications associées (16)

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Photocarrier-induced band-gap renormalization and ultrafast charge dynamics in black phosphorus

Majed Chergui, Marco Grioni, Michele Puppin, Alberto Crepaldi, Steven Roth, Gianmarco Gatti

With its tunable band-gap and its unique optical and electronic properties black phosphorus (BP) opens exciting opportunities for optoelectronic nanotechnology. The band-gap extends from the visible to the mid-infrared spectral range, as a function of samp ...

2019

Orbitally selective breakdown of Fermi liquid quasiparticles in Ca1.8Sr0.2RuO4

Marco Grioni, Johan Juul Chang, Gianmarco Gatti

We present a comprehensive angle-resolved photoemission spectroscopy study of Ca1.8Sr0.2RuO4. Four distinct bands are revealed and along the Ru-O bond direction their orbital characters are identified through a light polarization analysis and comparison to ...

AMER PHYSICAL SOC2019

Hallmarks of Hunds coupling in the Mott insulator Ca2RuO4

Henrik Moodysson Rønnow, Marco Grioni, Johan Juul Chang, Simon Karl Moser, Gianmarco Gatti, Claudia Giuseppina Fatuzzo

A paradigmatic case of multi-band Mott physics including spin-orbit and Hund's coupling is realized in Ca2RuO4. Progress in understanding the nature of this Mott insulating phase has been impeded by the lack of knowledge about the low-energy electronic str ...

Nature Research2017

Harmonium: An Ultrafast Vacuum Ultraviolet Facility

Majed Chergui, Marco Grioni, Marcel Drabbels, Frank van Mourik, Alberto Crepaldi, Christopher Alexander Arrell, Gianmarco Gatti, José Javier Pancracio Ojeda Andara, Luca Longetti, Andrew Daniel Bonnar Clark

Harmonium is a vacuum ultraviolet (VUV) photon source built within the Lausanne Centre for Ultrafast Science (LACUS). Utilising high harmonic generation, photons from 20-110 eV are available to conduct steady-state or ultrafast photoelectron and photoion s ...

Swiss Chemical Soc2017

Time-resolved ARPES at LACUS: Band Structure and Ultrafast Electron Dynamics of Solids

Majed Chergui, Marco Grioni, Arnaud Magrez, Helmuth Berger, Frank van Mourik, Philippe Bugnon, Alberto Crepaldi, Christopher Alexander Arrell, Gianmarco Gatti, José Javier Pancracio Ojeda Andara

The manipulation of the electronic properties of solids by light is an exciting goal, which requires knowledge of the electronic structure with energy, momentum and temporal resolution. Time- and angle-resolved photoemission spectroscopy (tr-ARPES) is the ...

2017

Electronic Phase Separation and Dramatic Inverse Band Renormalization in the Mixed-Valence Cuprate LiCu2O2

Marco Grioni, Helmuth Berger, Arnaud Magrez, Luca Moreschini, Philippe Bugnon, Simon Karl Moser, Gianmarco Gatti

We measured, by angle-resolved photoemission spectroscopy, the electronic structure of LiCu2O2, a mixed-valence cuprate where planes of Cu(I) (3d(10)) ions are sandwiched between layers containing one-dimensional edge-sharing Cu(II) (3d(9)) chains. We find ...

Amer Physical Soc2017

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