107 citations · 240 across the 6 of their papers we have counts for
17 papers
A time-based Chern number in periodically-driven systems in the adiabatic limit
I-Te Lu, Dongbin Shin, Umberto De Giovannini +4
To define the topology of driven systems, recent works have proposed synthetic dimensions as a way to uncover the underlying parameter space of topological invariants. Using time a…
Floquet engineering the band structure of materials with optimal control theory
Alberto Castro, Umberto de Giovannini, Shusuke A. Sato +2
We demonstrate that the electronic structure of a material can be deformed into Floquet pseudo-bands with arbitrarily tailored shapes. We achieve this goal with a novel combination…
Floquet Engineering of Magnetism in Topological Insulator Thin Films
Xiaoyu Liu, Peizhe Tang, Hannes Hübener +3
Dynamic manipulation of magnetism in topological materials is demonstrated here via a Floquet engineering approach using circularly polarized light. Increasing the strength of the…
Terahertz driven extremely nonlinear bulk photogalvanic currents in non-resonant conditions
Ofer Neufeld, Nicolas Tancogne-Dejean, Umberto De Giovannini +2
We report on the generation of bulk photocurrents in materials driven by non-resonant bi-chromatic fields that are circularly polarized and co-rotating. The nonlinear photocurrents…
On the survival of Floquet-Bloch states in the presence of scattering
S. Aeschlimann, S. A. Sato, R. Krause +9
Floquet theory has spawned many exciting possibilities for electronic structure control with light with enormous potential for future applications. The experimental realization in…
Phonoritons in a monolayer hBN optical cavity
Simone Latini, Umberto De Giovannini, Edbert J. Sie +3
A phonoriton is an elementary excitation that is predicted to emerge from hybridization between exciton, phonon and photon. Besides the intriguing many-particle structure, phonorit…