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

V. Khanna; R. Mankowsky; M. Petrich; H. Bromberger; S. A. Cavill; E. Möhr-Vorobeva; D. Nicoletti; Y. Laplace; G. D. Gu; J. P. Hill; M. Först; A. Cavalleri; S. S. Dhesi

doi:10.1103/PhysRevB.93.224522

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

V. Khanna, R. Mankowsky, M. Petrich, H. Bromberger, S. A. Cavill, E. Möhr-Vorobeva, D. Nicoletti, Y. Laplace, G. D. Gu, J. P. Hill, M. Först, A. Cavalleri, S. S. Dhesi

Physics

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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 ∼0.5mJ/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.

Original language	English
Article number	224522
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review B
Volume	93
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.93.224522
Publication status	Published - 30 Jun 2016

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© 2016, American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

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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. (2016). Restoring interlayer Josephson coupling in La1.885Ba0.115CuO4 by charge transfer melting of stripe order. Physical Review B, 93(22), 1-5. Article 224522. https://doi.org/10.1103/PhysRevB.93.224522

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

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 ∼0.5mJ/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.",

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Khanna, V, Mankowsky, R, Petrich, M, Bromberger, H, Cavill, SA, Möhr-Vorobeva, E, Nicoletti, D, Laplace, Y, Gu, GD, Hill, JP, Först, M, Cavalleri, A & Dhesi, SS 2016, 'Restoring interlayer Josephson coupling in La1.885Ba0.115CuO4 by charge transfer melting of stripe order', Physical Review B, vol. 93, no. 22, 224522, pp. 1-5. https://doi.org/10.1103/PhysRevB.93.224522

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AU - Khanna, V.

AU - Mankowsky, R.

AU - Petrich, M.

AU - Bromberger, H.

AU - Cavill, S. A.

AU - Möhr-Vorobeva, E.

AU - Nicoletti, D.

AU - Laplace, Y.

AU - Gu, G. D.

AU - Hill, J. P.

AU - Först, M.

AU - Cavalleri, A.

AU - Dhesi, S. S.

N1 - © 2016, American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

PY - 2016/6/30

Y1 - 2016/6/30

N2 - 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 ∼0.5mJ/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.

AB - 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 ∼0.5mJ/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.

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

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