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.
2011
Inglese
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]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/7275
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