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  Two distinct kinetic regimes for the relaxation of light-induced superconductivity in La1.675Eu0.2Sr0.125CuO4

Hunt, C. R., Nicoletti, D., Kaiser, S., Takayama, T., Takagi, H., & Cavalleri, A. (2015). Two distinct kinetic regimes for the relaxation of light-induced superconductivity in La1.675Eu0.2Sr0.125CuO4. Physical Review B, 91(2): 020505. doi:10.1103/PhysRevB.91.020505.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-BE1A-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-2CE9-6
Genre: Journal Article

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PhysRevB.91.020505.pdf (Publisher version), 542KB
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PhysRevB.91.020505.pdf
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https://dx.doi.org/10.1103/PhysRevB.91.020505 (Publisher version)
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http://arxiv.org/abs/1502.03028 (Preprint)
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 Creators:
Hunt, Cassandra R.1, 2, Author              
Nicoletti, Daniele1, Author              
Kaiser, Stefan1, Author              
Takayama, T.3, 4, Author
Takagi, H.3, 4, 5, Author
Cavalleri, Andrea1, 6, 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              
2Department of Physics, University of Illinois at Urbana-Champaign, ou_persistent22              
3Department of Advanced Materials Science, University of Tokyo, Tokyo, Japan, ou_persistent22              
4Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany, ou_persistent22              
5RIKEN Advanced Science Institute, Hirosawa 2-1, Wako 351-0198, Japan, ou_persistent22              
6Department of Physics, Clarendon Laboratory, University of Oxford, ou_persistent22              

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Free keywords: PACS numbers: 74.25.Gz, 74.40.Gh, 74.50.+r, 78.47.jg
 Abstract: We address the kinetic competition between charge striped order and superconductivity in La1.675Eu0.2Sr0.125CuO4. Ultrafast optical excitation is tuned to a midinfrared vibrational resonance that destroys charge order and promptly establishes transient coherent interlayer coupling in this material. This effect is evidenced by the appearance of a longitudinal plasma mode reminiscent of a Josephson plasma resonance. We find that coherent interlayer coupling can be generated up to the charge-order transition TCO≈80K, far above the equilibrium superconducting transition temperature of any single layer cuprate. Two key observations are extracted from the relaxation kinetics of the interlayer coupling. First, the plasma mode relaxes through a collapse of its coherence length and not its density. Second, two distinct kinetic regimes are observed for this relaxation, above and below spin-order transition TSO≈25K. In particular, the temperature-independent relaxation rate observed below TSO is anomalous and suggests coexistence of superconductivity and stripes rather than competition. Both observations support arguments that a low temperature coherent stripe (or pair density wave) phase suppresses c-axis tunneling by disruptive interference rather than by depleting the condensate.

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Language(s): eng - English
 Dates: 2014-10-162014-12-292015-01-292015-01-01
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevB.91.020505
BibTex Citekey: PhysRevB.91.020505
arXiv: 1502.03028
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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 (2) Sequence Number: 020505 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008