TY  - JOUR
AU  - Månsson, 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  - Légaré, François
AU  - Nisoli, Mauro
AU  - Rubio, Angel
AU  - Calegari, Francesca
TI  - Real-time observation of a correlation-driven sub 3 fs charge migration in ionised adenine
JO  - Communications chemistry
VL  - 4
IS  - 1
SN  - 2399-3669
CY  - [London]
PB  - Macmillan Publishers Limited, part of Springer Nature
M1  - PUBDB-2021-01737
SP  - 73
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 move along the molecular backbone. Capturing this few-femtosecond or attosecond charge redistribution would represent the real-time observation of electron correlation in a molecule with the enticing prospect of following the energy flow from a single excited electron to the other coupled electrons in the system. Here, we report a time-resolved study of the correlation-driven charge migration process occurring in the nucleic-acid base adenine after ionisation with 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 many-body excitation. This conclusion is supported by first-principles time-dependent simulations. These findings may contribute to the control of molecular reactivity at the electronic, few-femtosecond time scale.
LB  - PUB:(DE-HGF)16
C6  - 36697766
UR  - <Go to ISI:>//WOS:000657057300002
DO  - DOI:10.1038/s42004-021-00510-5
UR  - https://bib-pubdb1.desy.de/record/456891
ER  -