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  Femtosecond electron diffraction: heralding the era of atomically resolved dynamics

Sciaini, G., & Miller, R. J. D. (2011). Femtosecond electron diffraction: heralding the era of atomically resolved dynamics. Reports on Progress in Physics, 74(9): 096101. doi:10.1088/0034-4885/74/9/096101.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-1FAF-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-1FB0-B
Genre: Journal Article

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 Creators:
Sciaini, Germán1, 2, 3, Author              
Miller, R. J. Dwayne1, 2, 3, Author              
Affiliations:
1Atomically Resolved Structural Dynamics Division, Max Planck Research Department for Structural Dynamics, Department of Physics, University of Hamburg, External Organizations, ou_2173636              
2Centre for Free Electron Laser Science, Notkestraße 85, 22607 Hamburg, Germany , ou_persistent22              
3Departments of Chemistry and Physics, University of Toronto, Toronto ON, M5S 3H6, Canada , ou_persistent22              

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Free keywords: Optics, quantum optics and lasers; Condensed matter: structural, mechanical & thermal; PACS numbers: 42.65.Re Ultrafast processes; optical pulse generation and pulse compression; 61.05.J- Electron diffraction and scattering; 64.70.D- Solid–liquid transitions; 42.79.Dj Gratings
 Abstract: One of the great dream experiments in Science is to directly observe atomic motions as they occur. Femtosecond electron diffraction provided the first 'light' of sufficient intensity to achieve this goal by attaining atomic resolution to structural changes on the relevant timescales. This review covers the technical progress that made this new level of acuity possible and gives a survey of the new insights gained from an atomic level perspective of structural dynamics. Atomic level views of the simplest possible structural transition, melting, are discussed for a number of systems in which both thermal and purely electronically driven atomic displacements can be correlated with the degree of directional bonding. Optical manipulation of charge distributions and effects on interatomic forces/bonding can be directly observed through the ensuing atomic motions. New phenomena involving strongly correlated electron–lattice systems are also discussed in which optically induced changes in the potential energy landscape lead to ballistic structural changes. Concepts such as the structural order parameters are now directly observable at the atomic level of inspection to give a remarkable view of the extraordinary degree of cooperativity involved in strongly correlated electron–lattice systems. These recent examples, in combination with time-resolved real space imaging now possible with electron probes, are truly defining an emerging field that holds great promise to make a significant impact in how we understand structural dynamics. This article is dedicated to the memory of Professor David John Hugh Cockayne, a world leader in electron microscopy, who sadly passed away in December.

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Language(s): eng - English
 Dates: 2011-07-042011-05-052011-08-122011-09
 Publication Status: Published in print
 Pages: 36
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1088/0034-4885/74/9/096101
 Degree: -

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Title: Reports on Progress in Physics
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 74 (9) Sequence Number: 096101 Start / End Page: - Identifier: ISSN: 0034-4885
CoNE: https://pure.mpg.de/cone/journals/resource/954925438518