Wavelength-dependent optical enhancement of superconducting interlayer coupling in La1.885Ba0.115CuO4
- Max Planck Society, Hamburg (Germany). Max Planck Inst. for the Structure and Dynamics of Matter; Center for Free Electron Laser Science, Hamburg (Germany)
- Max Planck Society, Hamburg (Germany). Max Planck Inst. for the Structure and Dynamics of Matter; Center for Free Electron Laser Science, Hamburg (Germany); Diamond Light Source (United Kingdom); Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
- Max Planck Society, Hamburg (Germany). Max Planck Inst. for the Structure and Dynamics of Matter; Center for Free Electron Laser Science, Hamburg (Germany); Univ. of Oxford (United Kingdom)
We analyze the pump wavelength dependence for the photo-induced 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 = 13 K), in which stripes and superconductivity coexist, time-domain THz spectroscopy reveals a photo-induced blue-shift of the Josephson Plasma Resonance after excitation with optical pulses polarized perpendicular to the CuO2 planes. In the striped, non-superconducting state (TC < T < TSO ≃ 40 K) 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 mid-infrared to the visible, underscoring an unconventional competition between stripe order and superconductivity, which occurs on energy scales far above the ordering temperature.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC00112704
- OSTI ID:
- 1226026
- Alternate ID(s):
- OSTI ID: 1179705
- Report Number(s):
- BNL-108203-2015-JA; R&D Project: PO010; KC0201060
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 17; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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