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 La1.675Eu0.2Sr0.125CuO4, 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.
Light Induced Superconductivity in a Stripe-ordered Cuprate / Fausti, Daniele; R., Tobey; N., Dean; S., Kaiser; A., Dienst; M., Hoffmann; S., Pyon; T., Takayama; H., Takagi; A., Cavalleri. - In: SCIENCE. - ISSN 0036-8075. - STAMPA. - 331:(2011), pp. 189-191. [10.1126/science.1197294]
Light Induced Superconductivity in a Stripe-ordered Cuprate
FAUSTI, DANIELE;
2011-01-01
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 La1.675Eu0.2Sr0.125CuO4, 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.Pubblicazioni consigliate
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