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Journal Article

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

MPS-Authors
/persons/resource/persons133779

Khanna,  Vikaran
Diamond Light Source, Chilton, Didcot, OX11 0DE, United Kingdom;
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Department of Physics, Clarendon Laboratory, University of Oxford, Oxford, OX1 3PU, United Kingdom;

/persons/resource/persons133845

Mankowsky,  Roman
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science, 22761 Hamburg, Germany;

/persons/resource/persons196954

Petrich,  Michaela
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science, 22761 Hamburg, Germany;

/persons/resource/persons133777

Bromberger,  Hubertus
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science, 22761 Hamburg, Germany;

/persons/resource/persons133789

Nicoletti,  Daniele
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science, 22761 Hamburg, Germany;

/persons/resource/persons133815

Laplace,  Yannis
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science, 22761 Hamburg, Germany;

/persons/resource/persons133775

Först,  Michael
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science, 22761 Hamburg, Germany;

/persons/resource/persons133811

Cavalleri,  Andrea
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Department of Physics, Clarendon Laboratory, University of Oxford, Oxford, OX1 3PU, United Kingdom;
Center for Free-Electron Laser Science, 22761 Hamburg, Germany;

External Ressource
Fulltext (public)

PhysRevB.93.224522.pdf
(Publisher version), 899KB

Supplementary Material (public)
There is no public supplementary material available
Citation

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.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002A-F52A-9
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.