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  Photoinduced transitions in magnetoresistive manganites: A comprehensive view

Esposito, V., Rettig, L., Abreu, E., Bothschafter, E. M., Ingold, G., Kawasaki, M., et al. (2018). Photoinduced transitions in magnetoresistive manganites: A comprehensive view. Physical Review B, 97(1): 014312. doi:10.1103/PhysRevB.97.014312.

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PhysRevB.97.014312.pdf (Publisher version), 664KB
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PhysRevB.97.014312.pdf
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2018
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APS
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 Creators:
Esposito, V.1, Author
Rettig, Laurenz1, 2, Author           
Abreu, E.3, Author
Bothschafter, E. M.1, Author
Ingold, G.1, 4, Author
Kawasaki, M.5, 6, Author
Kubli, M.3, Author
Lantz, G.3, Author
Nakamura, M.5, 7, Author
Rittman, J.1, 4, Author
Savoini, M.3, Author
Tokura, Y.5, 6, Author
Staub, U.1, Author
Johnson, S. L.3, Author
Beaud, P.1, 4, Author
Affiliations:
1Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland, ou_persistent22              
2Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
3Institute for Quantum Electronics, ETH Zürich, 8093 Zürich, Switzerland, ou_persistent22              
4SwissFEL, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland, ou_persistent22              
5RIKEN Center for Emergent Matter Science, Wako 351-0198, Japan, ou_persistent22              
6Department of Applied Physics and Quantum Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan, ou_persistent22              
7PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, 332-0012, Japan, ou_persistent22              

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 Abstract: We use femtosecond x-ray diffraction to study the structural response of charge and orbitally ordered Pr1−xCaxMnO3 thin films across a phase transition induced by 800 nm laser pulses. By investigating the dynamics of both superlattice reflections and regular Bragg peaks, we disentangle the different structural contributions and analyze their relevant timescales. The dynamics of the structural and charge order response are qualitatively different when excited above and below a critical fluence fc. For excitations below fc the charge order and the superlattice is only partially suppressed and the ground state recovers within a few tens of nanosecond via diffusive cooling. When exciting above the critical fluence the superlattice vanishes within approximately half a picosecond followed by a change of the unit cell parameters on a 10 picoseconds timescale. At this point all memory from the symmetry breaking is lost and the recovery time increases by many order of magnitudes due to the first order character of the structural phase transition.

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Language(s): eng - English
 Dates: 2018-01-112017-10-272018-01-312018-01
 Publication Status: Issued
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevB.97.014312
 Degree: -

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Project name : PSI-FELLOW - International Fellowship Program on Materials & Matter, Energy & Environment, Human Health & Life-Sciences, and Accelerator Technology
Grant ID : 290605
Funding program : Funding Programme 7 (FP7)
Funding organization : European Commission (EC)

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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: 10 Volume / Issue: 97 (1) Sequence Number: 014312 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008