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  Wavelength-dependent optical enhancement of superconducting interlayer coupling in La1.885Ba0.115CuO4

Casandruc, E., Nicoletti, D., Rajasekaran, S., Laplace, Y., Khanna, V., Gu, G. D., et al. (2015). Wavelength-dependent optical enhancement of superconducting interlayer coupling in La1.885Ba0.115CuO4. Physical Review B, 91(17): 174502. doi:10.1103/PhysRevB.91.174502.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-126E-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-3E94-4
Genre: Journal Article

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PhysRevB.91.174502.pdf (Publisher version), 535KB
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PhysRevB.91.174502.pdf
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2015
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http://dx.doi.org/10.1103/PhysRevB.91.174502 (Publisher version)
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Locator:
http://arxiv.org/abs/1505.02167 (Preprint)
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 Creators:
Casandruc, Eliza1, 2, 3, Author              
Nicoletti, Daniele1, 2, Author              
Rajasekaran, Srivats1, 2, Author              
Laplace, Yannis1, 2, Author              
Khanna, Vikaran1, 2, 4, 5, Author              
Gu, G. D.6, Author
Hill, J. P.6, Author
Cavalleri, Andrea1, 2, 4, Author              
Affiliations:
1Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
2Center for Free Electron Laser Science, Hamburg, Germany, ou_persistent22              
3International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266714              
4Department of Physics, Clarendon Laboratory, University of Oxford, ou_persistent22              
5Diamond Light Source, ou_persistent22              
6Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA, ou_persistent22              

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Free keywords: PACS numbers: 74.25.Gz, 74.40.Gh, 74.62.Yb, 78.47.jg
 Abstract: We analyze the pump wavelength dependence for the photoinduced enhancement of interlayer coupling in La1.885Ba0.115CuO4, which is promoted by optical melting of the stripe order. In the equilibrium superconducting state (T < TC = 13K) in which stripes and superconductivity coexist, time-domain terahertz spectroscopy reveals a photoinduced blueshift of the Josephson plasma resonance after excitation with optical pulses polarized perpendicular to the CuO2 planes. In the striped nonsuperconducting state (TC < T < T SO ≃ 40K) a transient plasma resonance similar to that seen below TC appears from a featureless equilibrium reflectivity. Most strikingly, both these effects become stronger upon tuning of the pump wavelength from the midinfrared to the visible, underscoring an unconventional competition between stripe order and superconductivity, which occurs on energy scales far above the ordering temperature.

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Language(s): eng - English
 Dates: 2015-04-162015-03-122015-05-052015-05-01
 Publication Status: Published in print
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevB.91.174502
arXiv: 1505.02167
 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: 91 (17) Sequence Number: 174502 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008