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  Beyond the molecular movie: dynamics of bands and bonds during a photo-induced phase transition

Nicholson, C., Lücke, A., Schmidt, W. G., Puppin, M., Rettig, L., Ernstorfer, R., et al. (2018). Beyond the molecular movie: dynamics of bands and bonds during a photo-induced phase transition. Science, 362(6416), 821-825. doi:10.1126/science.aar4183.

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1803.11022.pdf (Preprint), 3MB
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 Creators:
Nicholson, Christopher1, Author           
Lücke, Andreas2, Author
Schmidt, Wolf Gero2, Author
Puppin, Michele1, Author           
Rettig, Laurenz1, Author           
Ernstorfer, Ralph1, Author           
Wolf, Martin1, Author           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2Department of Physics, University of Paderborn, Warburger Strasse 100, 33098 Paderborn, Germany, ou_persistent22              

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Free keywords: Condensed Matter, Strongly Correlated Electrons, cond-mat.str-el
 Abstract: Ultrafast non-equilibrium dynamics offer a route to study the microscopic interactions that govern macroscopic behavior. In particular, photo-induced phase transitions (PIPTs) in solids provide a test case for how forces, and the resulting atomic motion along a reaction coordinate, originate from a non-equilibrium population of excited electronic states. Utilizing femtosecond photoemission we obtain access to the transient electronic structure during an ultrafast PIPT in a model system: indium nanowires on a silicon(111) surface. We uncover a detailed reaction pathway, allowing a direct comparison with the dynamics predicted by ab initio simulations. This further reveals the crucial role played by localized photo-holes in shaping the potential energy landscape, and enables a combined momentum and real space description of PIPTs, including the ultrafast formation of chemical bonds.

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Language(s): eng - English
 Dates: 2018-03-292018-11-162018-10-032018-11-162018-11-16
 Publication Status: Published in print
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
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Title: Science
  Other : Science
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Association for the Advancement of Science
Pages: 5 Volume / Issue: 362 (6416) Sequence Number: - Start / End Page: 821 - 825 Identifier: ISSN: 0036-8075
CoNE: https://pure.mpg.de/cone/journals/resource/991042748276600_1