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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

Journal Article · · Physical Review B
 [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)

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.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704
OSTI ID:
1336140
Alternate ID(s):
OSTI ID: 1259994
Report Number(s):
BNL-112614-2016-JA; PRBMDO; R&D Project: PO010; KC0201060
Journal Information:
Physical Review B, Vol. 93, Issue 22; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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Optically enhanced coherent transport in YBa2Cu3O6.5 by ultrafast redistribution of interlayer coupling text January 2013
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Simultaneous Transitions in Cuprate Momentum-Space Topology and Electronic Symmetry Breaking text January 2014
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Cited By (8)

Probing dynamics in quantum materials with femtosecond X-rays journal June 2018
Anomalous relaxation kinetics and charge-density-wave correlations in underdoped BaPb 1− x Bi x O 3 journal August 2017
Disorder raises the critical temperature of a cuprate superconductor journal May 2019
Measuring non-equilibrium dynamics in complex solids with ultrashort X-ray pulses
  • Buzzi, Michele; Först, Michael; Cavalleri, Andrea
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 377, Issue 2145 https://doi.org/10.1098/rsta.2017.0478
journal April 2019
Dynamical Stability Limit for the Charge Density Wave in K 0.3 MoO 3 journal March 2017
Ultrafast time-resolved x-ray scattering reveals diffusive charge order dynamics in La 2– x Ba x CuO 4 journal August 2019
Transiently enhanced interlayer tunneling in optically driven high $T_c$ superconductors text January 2017
Disorder raises the critical temperature of a cuprate superconductor text January 2018

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