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  Ultrafast dissolution and creation of bonds in IrTe2 induced by photodoping

Ideta, S.-I., Zhang, D., Dijkstra, A., Artyukhin, S., Keskin, S., Cingolani, R., et al. (2018). Ultrafast dissolution and creation of bonds in IrTe2 induced by photodoping. Science Advances, 4(7): eaar3867. doi:10.1126/sciadv.aar3867.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0002-1152-E Version Permalink: https://hdl.handle.net/21.11116/0000-0006-D05B-9
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© The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. GovernmentWorks. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
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 Creators:
Ideta, S.-I.1, 2, 3, Author           
Zhang, Dongfang1, 2, Author           
Dijkstra, A.1, 2, 4, Author           
Artyukhin, S.5, Author
Keskin, S.1, 2, Author           
Cingolani, R.5, Author
Shimojima, T.3, Author
Ishizaka, K.3, Author
Ishii, H.6, Author
Kudo, K.6, Author
Nohara, M.6, Author
Miller, R. J. D.1, 2, 7, Author           
Affiliations:
1Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              
2Center for Ultrafast Imaging, ou_persistent22              
3Quantum-Phase Electronics Center, Department of Applied Physics, University of Tokyo, ou_persistent22              
4School of Chemistry and School of Physics and Astronomy, University of Leeds, ou_persistent22              
5Italian Institute of Technology, ou_persistent22              
6Research Institute for Interdisciplinary Science, Okayama University, ou_persistent22              
7Departments of Chemistry and Physics, 80 St. George Street, University of Toronto, ou_persistent22              

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 Abstract: The observation and control of interweaving spin, charge, orbital, and structural degrees of freedom in materials on ultrafast time scales reveal exotic quantum phenomena and enable new active forms of nanotechnology. Bonding is the prime example of the relation between electronic and nuclear degrees of freedom. We report direct evidence illustrating that photoexcitation can be used for ultrafast control of the breaking and recovery of bonds in solids on unprecedented time scales, near the limit for nuclear motions. We describe experimental and theoretical studies of IrTe2 using femtosecond electron diffraction and density functional theory to investigate bonding instability. Ir-Ir dimerization shows an unexpected fast dissociation and recovery due to the filling of the antibonding dxy orbital. Bond length changes of 20% in IrTe2 are achieved by effectively addressing the bonds directly through this relaxation process. These results could pave the way to ultrafast switching between metastable structures by photoinduced manipulation of the relative degree of bonding in this manner.

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Language(s): eng - English
 Dates: 2017-11-042018-06-182018-07-27
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: DOI: 10.1126/sciadv.aar3867
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Title: Science Advances
  Other : Sci. Adv.
Source Genre: Journal
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Publ. Info: Washington : AAAS
Pages: - Volume / Issue: 4 (7) Sequence Number: eaar3867 Start / End Page: - Identifier: ISSN: 2375-2548
CoNE: https://pure.mpg.de/cone/journals/resource/2375-2548