Resistivity saturation in PrFeAsO${}_{1-x}$F${}_y$ superconductor: An evidence of strong electron-phonon coupling

Abstract

We have measured the resistivity of PrFeAsO${}_{1-x}$F${}_y$ samples over a wide range of temperature in order to elucidate the role of electron-phonon interaction on normal- and superconducting-state properties. The linear T dependence of $\rho$ above 170 K followed by a saturationlike behavior at higher temperature is a clear signature of strong electron-phonon coupling. From the analysis of T dependence of $\rho$, we have estimated several normal-state parameters useful for understanding the origin of superconductivity in this system. Our results suggest that Fe-based oxypnictides are phonon mediated BCS superconductors like Chevrel phases and A15 compounds.

arXiv comment15 pages, 4 figures

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Cited by in corpus (16)

• High - Temperature Superconductivity in Iron Based Layered Compounds
• Phase diagram of the PrFeAsO${}_{1-x}$F${}_x$ superconductor
• Density of Phonon States in Superconducting FeSe as a Function of Temperature and Pressure
• Impact of hydrostatic pressure on superconductivity of Sr0.5La0.5FBiS2
• Physical property characterization of single step synthesized NdFeAsO0.80F0.20 bulk 50K superconductor
• Electron-phonon coupling in cuprate and iron-based superconductors revealed by Raman scattering
• Quantm Magnetoresistance of the PrFeAsO oxypnictides
• Temperature-dependent transformation of the magnetic excitation spectrum on approaching superconductivity in Fe1-x (Ni/Cu)x Te0.5 Se0.5
• Multigap superconductivity in RbCa2Fe4As4F2 investigated using muSR measurements
• Pairing symmetry of an intermediate valence superconductor CeIr3 investigated using muSR measurements
• The magnetization of PrFeAsO${}_{0.60}$F$_{0.12} sueprconductor
• Vortex dynamics and second magnetization peak in PrFeAsO${}_{0.60}$F${}_{0.12}$ superconductor
• Fe-spin reorientation in PrFeAsO : Evidences from resistivity and specific heat studies
• Magnetotransport studies of Superconducting Pr${}_4$Fe${}_2$As${}_2$Te${}_{1-x}$O${}_4$
• Predictions of highest Transition-temperature for electron-phonon superconductors
• Upper critical field, pressure-dependent superconductivity and electronic anisotropy of Sm${}_4$Fe${}_2$As${}_2$Te${}_{1-x}$O${}_{4-y}$F$y$