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  Restoring interlayer Josephson coupling in La1.885Ba0.115CuO4 by charge transfer melting of stripe order

Khanna, V., Mankowsky, R., Petrich, M., Bromberger, H., Cavill, S. A., Möhr-Vorobeva, E., et al. (2016). Restoring interlayer Josephson coupling in La1.885Ba0.115CuO4 by charge transfer melting of stripe order. Physical Review B, 93(22): 224522. doi:10.1103/PhysRevB.93.224522.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-F52A-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-F51A-E
Genre: Journal Article

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PhysRevB.93.224522.pdf (Publisher version), 899KB
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http://dx.doi.org/10.1103/PhysRevB.93.224522 (Publisher version)
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 Creators:
Khanna, Vikaran1, 2, 3, Author              
Mankowsky, Roman2, 4, Author              
Petrich, Michaela2, 4, Author              
Bromberger, Hubertus2, 4, Author              
Cavill, S. A.1, 5, Author
Möhr-Vorobeva, E.3, Author
Nicoletti, Daniele2, 4, Author              
Laplace, Yannis2, 4, Author              
Gu, G. D.6, Author
Hill, J. P.6, Author
Först, Michael2, 4, Author              
Cavalleri, Andrea2, 3, 4, Author              
Dhesi, S. S.1, Author
Affiliations:
1Diamond Light Source, Chilton, Didcot, OX11 0DE, United Kingdom, ou_persistent22              
2Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
3Department of Physics, Clarendon Laboratory, University of Oxford, Oxford, OX1 3PU, United Kingdom, ou_persistent22              
4Center for Free-Electron Laser Science, 22761 Hamburg, Germany, ou_persistent22              
5Department of Physics, University of York, Heslington, York, YO10 5DD, United Kingdom, ou_persistent22              
6NSLS-II and Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York, USA, ou_persistent22              

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 Abstract: We show that disruption of charge-density-wave (stripe) order by charge transfer excitation, enhances the superconducting phase rigidity in La1.885Ba0.115CuO4. Time-resolved resonant soft x-ray diffraction demonstrates that charge order melting is prompt following near-infrared photoexcitation whereas the crystal structure remains intact for moderate fluences. THz time-domain spectroscopy reveals that, for the first 2 ps following photoexcitation, a new Josephson plasma resonance edge, at higher frequency with respect to the equilibrium edge, is induced indicating enhanced superconducting interlayer coupling. The fluence dependence of the charge-order melting and the enhanced superconducting interlayer coupling are correlated with a saturation limit of ∼ 0.5 mJ/cm2. Using a combination of x-ray and optical spectroscopies we establish a hierarchy of timescales between enhanced superconductivity, melting of charge order, and rearrangement of the crystal structure.

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Language(s): eng - English
 Dates: 2016-01-202016-06-302016-06
 Publication Status: Published in print
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevB.93.224522
arXiv: 1607.06207
 Degree: -

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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: - Volume / Issue: 93 (22) Sequence Number: 224522 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008