Light-induced superconductivity in a stripe-ordered cuprate |
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| Authors: | Fausti D Tobey R I Dean N Kaiser S Dienst A Hoffmann M C Pyon S Takayama T Takagi H Cavalleri A |
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| Institution: | Max Planck Research Department for Structural Dynamics, University of Hamburg-Centre for Free Electron Laser Science-Hamburg, Germany. daniele.fausti@mpsd.cfel.de |
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| Abstract: | One of the most intriguing features of some high-temperature cuprate superconductors is the interplay between one-dimensional "striped" spin order and charge order, and superconductivity. We used mid-infrared femtosecond pulses to transform one such stripe-ordered compound, nonsuperconducting La(1.675)Eu(0.2)Sr(0.125)CuO(4), into a transient three-dimensional superconductor. The emergence of coherent interlayer transport was evidenced by the prompt appearance of a Josephson plasma resonance in the c-axis optical properties. An upper limit for the time scale needed to form the superconducting phase is estimated to be 1 to 2 picoseconds, which is significantly faster than expected. This places stringent new constraints on our understanding of stripe order and its relation to superconductivity. |
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