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Normal-state transport properties of PrFeAsO1-xFy superconductor

IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata

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Title Normal-state transport properties of PrFeAsO1-xFy superconductor
Creator Bhoi, D
Mandal, P
Choudhury, Pranab
Subject Ceramic-Metal Systems
Description We have synthesized oxygen-deficient fluorine-doped samples of nominal composition PrFeAsO1-xFy to study the normal- and superconducting-state properties. Resistivity of undoped PrFeAsO exhibits a strong anomaly at around 155K due to the spin-density-wave instability. Fluorine-doping (x=0.4, y = 0.12) suppresses this magnetic instability and drives the system to the superconducting ground state with superconducting onset temperature 50 K. The behavior of normal-state resistivity changes from T-2-like to T-linear to sublinear in T with increasing temperature indicating that both electron-electron interaction and electron-phonon interaction are strong. From the analysis of T dependence of rho, we have estimated the electron-phonon coupling strength (lambda) to be quite large (1.3). (C) 2008 Elsevier B.V. All rights reserved.
Publisher Elsevier
Date 2008-11
Type Article
Format application/pdf
Identifier http://cgcri.csircentral.net/223/1/Physica_C_468_(2008)_2275%E2%80%932278.pdf
Bhoi, D and Mandal, P and Choudhury, Pranab (2008) Normal-state transport properties of PrFeAsO1-xFy superconductor. Physica C-Superconductivity and its Applications, 468 (22). pp. 2275-2278. ISSN 0921-4534
Relation http://cgcri.csircentral.net/223/