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.

Coslovich, G., Giannetti, C., Cilento, F., Dal Conte, S., Ferrini, G., Galinetto, P., Greven, M., Eisaki, H., Raichle, M., Liang, R., Damascelli, A., Parmigiani, F., Evidence of a photoinduced non-thermal superconducting-to-normal-state phase transition in overdoped Y-Bi2212, <<PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS>>, 2011; 83 (Febbraio): N/A-N/A. [doi:10.1103/PhysRevB.83.064519] [http://hdl.handle.net/10807/7275]

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

Coslovich, Giacomo;Giannetti, Claudio;Cilento, Federico;Dal Conte, Stefano;Ferrini, Gabriele;Galinetto, Pietro;Parmigiani, Fulvio
2011

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.
Inglese
http://prb.aps.org/abstract/PRB/v83/i6/e064519
Coslovich, G., Giannetti, C., Cilento, F., Dal Conte, S., Ferrini, G., Galinetto, P., Greven, M., Eisaki, H., Raichle, M., Liang, R., Damascelli, A., Parmigiani, F., Evidence of a photoinduced non-thermal superconducting-to-normal-state phase transition in overdoped Y-Bi2212, <>, 2011; 83 (Febbraio): N/A-N/A. [doi:10.1103/PhysRevB.83.064519] [http://hdl.handle.net/10807/7275]
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10807/7275
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