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  Exchange-Striction Driven Ultrafast Nonthermal Lattice Dynamics in NiO

Windsor, Y. W., Zahn, D., Kamrla, R., Feldl, J., Seiler, H., Chiang, C.-.-T., et al. (2021). Exchange-Striction Driven Ultrafast Nonthermal Lattice Dynamics in NiO. Physical Review Letters, 126(14): 147202. doi:10.1103/PhysRevLett.126.147202.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0007-7358-5 Version Permalink: https://hdl.handle.net/21.11116/0000-000D-1DF1-3
Genre: Journal Article

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 Creators:
Windsor, Yoav William1, Author           
Zahn, Daniela1, Author           
Kamrla, R.2, Author
Feldl, J.3, Author
Seiler, Helene1, Author           
Chiang, C. -T.2, Author
Ramsteiner, M.3, Author
Widdra, W.2, Author
Ernstorfer, Ralph1, Author           
Rettig, Laurenz1, Author           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2Institute of Physics, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle, Germany, ou_persistent22              
3Paul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e.V., Hausvogteiplatz 5-7, 10117 Berlin, Germany , ou_persistent22              

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Free keywords: Condensed Matter, Strongly Correlated Electrons, cond-mat.str-el, Condensed Matter, Materials Science, cond-mat.mtrl-sci
 Abstract: We use femtosecond electron diffraction to study ultrafast lattice dynamics in the highly correlated antiferromagnetic (AF) semiconductor NiO. Using the scattering vector (Q) dependence of Bragg diffraction, we introduce a Q-resolved effective lattice temperature, and identify a nonthermal lattice state with preferential displacement of O compared to Ni ions, which occurs within ~0.3 ps and persists for 25 ps. We associate this with transient changes to the AF exchange striction-induced lattice distortion, supported by the observation of a transient Q-asymmetry of Friedel pairs. Our observation highlights the role of spin-lattice coupling in routes towards ultrafast control of spin order.

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Language(s): eng - English
 Dates: 2020-11-142020-10-302021-03-032021-04-082021-04-09
 Publication Status: Issued
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: arXiv: 2011.07289
URI: https://arxiv.org/abs/2011.07289
DOI: 10.1103/PhysRevLett.126.147202
 Degree: -

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Project name : FLATLAND - Electron-lattice-spin correlations and many-body phenomena in 2D semiconductors and related heterostructures
Grant ID : 682843
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: 8 Volume / Issue: 126 (14) Sequence Number: 147202 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1