Single superconducting energy scale in electron-doped cuprate superconductor Pr_2-xCexCuO_4

Abstract

The tunneling spectra of the electron-doped cuprate Pr_2-xCe_xCuO4 as a function of doping and temperature is reported. We find that the superconducting gap, delta, shows a BCS-like temperature dependence even for extremely low carrier concentrations (studied here for the first time). Moreover, delta follows the doping dependence of Tc, in strong contrast with tunneling studies of hole-doped cuprates. From our results we conclude that there is a single superconducting energy scale in the electron-doped cuprates.

References in corpus (5)

• Scanning tunneling spectroscopy of high-temperature superconductors
• Electron pockets in the Fermi surface of hole-doped high-Tc superconductors
• Two Gaps Make a High Temperature Superconductor?
• Two Energy Scales and two Quasiparticle Dynamics in the Superconducting State of Underdoped Cuprates
• Signatures of non-monotonic d-wave gap in electron-doped cuprates

Cited by in corpus (6)

• Nodeless superconductivity arising from strong (pi,pi) antiferromagnetism in the infinite-layer electron-doped cuprate Sr1-xLaxCuO2
• Ultrafast dynamics in the presence of antiferromagnetic correlations in electron-doped cuprate La${}_{2-x}$Ce${}_x$CuO${}_{4\pm \delta }$
• Anomalous Enhancement of the Superconducting Transition Temperature in Electron-Doped Cuprate Heterostructures
• On the resistivity at low temperatures in electron-doped cuprate superconductors
• 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
• Evolution of a bosonic mode across the superconducting dome in the high-Tc cuprate Pr(2-x)Ce(x)CuO(4-δ)