Evidence of a photoinduced non-thermal superconducting-to-normal-state phase transition in overdoped Y-Bi2212

Claudio Giannetti, Gabriele Ferrini, Giacomo Coslovich, Federico Cilento, Stefano Dal Conte, Pietro Galinetto, Fulvio Parmigiani, Martin Greven, Hiroshi Eisaki, Markus Raichle, Ruixing Liang, Andrea Damascelli

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31 Citazioni (Scopus)

Abstract

Here we report extensive ultrafast time-resolved reflectivity experiments on overdoped Y-Bi2212 single crystals (Tc=78 K) aimed to clarify the nature of the superconducting-to-normal-state photoinduced phase transition. The experimental data show the lack of the quasiparticles decay time divergence at the fluence required to induce this phase transition, in contrast to the thermally-driven phase transition observed at Tc and at variance with recently reported photoinduced charge-density-wave and spin-density-wave to metal phase transitions. Our data demonstrate the non-thermal character of the superconducting-to-normal-state photoinduced phase transition. The data have been analyzed using an ad-hoc developed timedependent Rothwarf-Taylor model, opening the question on the order of this non-equilibrium phase transition.
Lingua originaleEnglish
pagine (da-a)N/A-N/A
Numero di pagine64519
RivistaPHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
Volume83
DOI
Stato di pubblicazionePubblicato - 2011

Keywords

  • dynamics
  • superconductors
  • ultrafast lasers

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