期刊
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
卷 21, 期 5, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSTQE.2015.2419218
关键词
Molecular physics; attosecond; femtosecond; extreme-ultraviolet (XUV) spectroscopy; high harmonics; ultrafast optics
资金
- European Research Council under the ERC [227355 ELYCHE, 290853 XCHEM]
- LASERLAB-EUROPE [284464]
- EC's Seventh Framework Program
- European COST Action [CM1204 XLIC]
- MICINN [FIS2013-42002-R]
- ERA-Chemistry Project [PIM2010EEC-00751]
- European Grant MC-ITN CORINF
- European Grant MC-RG ATTOTREND [268284]
- UK's STFC Laser Loan Scheme
- Engineering and Physical Sciences Research Council [EP/J007048/1]
- Leverhulme Trust [RPG-2012-735]
- Northern Ireland Department of Employment and Learning
- EPSRC [EP/J007048/1, EP/M001644/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/M001644/1, EP/J007048/1] Funding Source: researchfish
In the past few years, attosecond techniques have been implemented for the investigation of ultrafast dynamics in molecules. The generation of isolated attosecond pulses characterized by a relatively high photon flux has opened up new possibilities in the study of molecular dynamics. In this paper, we report on experimental and theoretical results of ultrafast charge dynamics in a biochemically relevant molecule, namely, the amino acid phenylalanine. The data represent the first experimental demonstration of the generation and observation of a charge migration process in a complexmolecule, where electron dynamics precede nuclear motion. The application of attosecond technology to the investigation of electron dynamics in biologically relevant molecules represents a multidisciplinary work, which can open new research frontiers: those in which few-femtosecond and even subfemtosecond electron processes determine the fate of biomolecules. It can also open new perspectives for the development of new technologies, for example, in molecular electronics, where electron processes on an ultrafast temporal scale are essential to trigger and control the electron current on the scale of the molecule.
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