Melting the Superconducting State in the Electron Doped Cuprate Pr${}_{1.85}$Ce${}_{0.15}$CuO${}_{4-\delta }$ with Intense near-infrared and Terahertz Pulses

Abstract

We studied the superconducting (SC) state depletion process in an electron doped cuprate Pr${}_{1.85}$Ce${}_{0.15}$CuO${}_{4-\delta }$ by pumping with near-infrared (NIR) and narrow-band THz pulses. When pumping with THz pulses tuned just above the SC gap, we find the absorbed energy density required to deplete superconductivity, $A_{dep}$, matches the thermodynamic condensation energy. Contrary, by NIR pumping $A_{dep}$ is an order of magnitude higher, despite the fact that the SC gap is much smaller than the energy of relevant bosonic excitations. The result implies that only a small subset of bosons contribute to pairing.

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Cited by in corpus (7)

• Néel Spin Orbit Torque driven antiferromagnetic resonance in Mn${}_2$Au probed by time-domain THz spectroscopy
• Non-equilibrium phenomena in superconductors probed by femtosecond time-domain spectroscopy
• Ultrafast dynamics in the presence of antiferromagnetic correlations in electron-doped cuprate La${}_{2-x}$Ce${}_x$CuO${}_{4\pm \delta }$
• Photo-induced new metastable state with modulated Josephson coupling strengths in Pr${}_{0.88}$LaCe${}_{0.12}$CuO${}_4$
• Light-Induced Melting of Competing Stripe Orders without Introducing Superconductivity in La${}_{2-\mathbf{x}}$Ba${}_{\mathbf{x}}$CuO${}_4$
• Robust hybridization gap in a Kondo Insulator YbB${}_{12}$ probed by femtosecond optical spectroscopy
• Ultrafast Raman probe of the photoinduced superconducting to normal state transition in the cuprate Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$