TY  - EJOUR
AU  - Mansson, Erik P.
AU  - Latini, Simone
AU  - Covito, Fabio
AU  - Wanie, Vincent
AU  - Galli, Mara
AU  - Perfetto, Enrico
AU  - Stefanucci, Gianluca
AU  - Huebener, Hannes
AU  - De Giovannini, Umberto
AU  - Castrovilli, Mattea C.
AU  - Trabattoni, Andrea
AU  - Frassetto, Fabio
AU  - Poletto, Luca
AU  - Greenwood, Jason B.
AU  - Legare, Francois
AU  - Nisoli, Mauro
AU  - Rubio, Angel
AU  - Calegari, Francesca
TI  - Correlation-driven sub-3 fs charge migration in ionised adenine
M1  - PUBDB-2021-01440
PY  - 2021
AB  - Sudden ionisation of a relatively large molecule can initiate a correlation-driven process dubbed charge migration, where the electron density distribution is expected to rapidly change. Capturing this few-femtosecond/attosecond charge redistribution represents the real-time observation of the electron correlation in the molecule. So far, there has been no experimental evidence of this process. Here we report on a time-resolved study of the correlation-driven charge migration process occurring in the bio-relevant molecule adenine after ionisation by a 15-35 eV attosecond pulse. We find that, the production of intact doubly charged adenine - via a shortly-delayed laser-induced second ionisation event - represents the signature of a charge inflation mechanism resulting from the many-body excitation. This conclusion is supported by first-principles time-dependent simulations. Our findings opens new important perspectives for the control of the molecular reactivity at the electronic timescale.
LB  - PUB:(DE-HGF)25
DO  - DOI:10.3204/PUBDB-2021-01440
UR  - https://bib-pubdb1.desy.de/record/456289
ER  -