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Title: Restoring interlayer Josephson coupling in La 1.885 Ba 0.115 CuO 4 by charge transfer melting of stripe order

Abstract

Here, we show that disruption of charge-density-wave (stripe) order by charge transfer excitation, enhances the superconducting phase rigidity in La 1.885Ba 0.115CuO 4. 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. Furthermore, the fluence dependence of the charge-order melting and the enhanced superconducting interlayer coupling are correlated with a saturation limit of ~0.5mJ/cm 2. When 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.

Authors:
 [1];  [2];  [2];  [2];  [3];  [4];  [2];  [2];  [5];  [5];  [2];  [6];  [7]
  1. Diamond Light Source, Didcot (United Kingdom); Max Planck Inst. for the Structure and Dynamics of Matter, Hamburg (Germany); Univ. of Oxford (United Kingdom). Dept. of Physics
  2. Max Planck Inst. for the Structure and Dynamics of Matter, Hamburg (Germany) and Center for Free Electron Laser Science
  3. Diamond Light Source, Didcot (United Kingdom); Univ. of York (United Kingdom). Dept. of Physics
  4. Univ. of Oxford (United Kingdom). Dept. of Physics
  5. Brookhaven National Lab. (BNL), Upton, NY (United States). NSLS-II and Condensed Matter Physics and Materials Science Dept.
  6. Max Planck Inst. for the Structure and Dynamics of Matter, Hamburg (Germany) and Center for Free Electron Laser Science; Univ. of Oxford (United Kingdom). Dept. of Physics
  7. Diamond Light Source, Didcot (United Kingdom)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1336140
Alternate Identifier(s):
OSTI ID: 1259994
Report Number(s):
BNL-112614-2016-JA
Journal ID: ISSN 2469-9950; PRBMDO; R&D Project: PO010; KC0201060
Grant/Contract Number:  
SC00112704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 22; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Khanna, V., Mankowsky, R., Petrich, M., Bromberger, H., Cavill, S. A., Möhr-Vorobeva, E., Nicoletti, D., Laplace, Y., Gu, G. D., Hill, J. P., Först, M., Cavalleri, A., and Dhesi, S. S. Restoring interlayer Josephson coupling in La1.885Ba0.115CuO4 by charge transfer melting of stripe order. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.93.224522.
Khanna, V., Mankowsky, R., Petrich, M., Bromberger, H., Cavill, S. A., Möhr-Vorobeva, E., Nicoletti, D., Laplace, Y., Gu, G. D., Hill, J. P., Först, M., Cavalleri, A., & Dhesi, S. S. Restoring interlayer Josephson coupling in La1.885Ba0.115CuO4 by charge transfer melting of stripe order. United States. doi:10.1103/PhysRevB.93.224522.
Khanna, V., Mankowsky, R., Petrich, M., Bromberger, H., Cavill, S. A., Möhr-Vorobeva, E., Nicoletti, D., Laplace, Y., Gu, G. D., Hill, J. P., Först, M., Cavalleri, A., and Dhesi, S. S. Thu . "Restoring interlayer Josephson coupling in La1.885Ba0.115CuO4 by charge transfer melting of stripe order". United States. doi:10.1103/PhysRevB.93.224522. https://www.osti.gov/servlets/purl/1336140.
@article{osti_1336140,
title = {Restoring interlayer Josephson coupling in La1.885Ba0.115CuO4 by charge transfer melting of stripe order},
author = {Khanna, V. and Mankowsky, R. and Petrich, M. and Bromberger, H. and Cavill, S. A. and Möhr-Vorobeva, E. and Nicoletti, D. and Laplace, Y. and Gu, G. D. and Hill, J. P. and Först, M. and Cavalleri, A. and Dhesi, S. S.},
abstractNote = {Here, 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. Furthermore, the fluence dependence of the charge-order melting and the enhanced superconducting interlayer coupling are correlated with a saturation limit of ~0.5mJ/cm2. When 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.},
doi = {10.1103/PhysRevB.93.224522},
journal = {Physical Review B},
number = 22,
volume = 93,
place = {United States},
year = {2016},
month = {6}
}

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