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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Woodard-Cody anomalous resistivity in a Nb5Ge3C0.3 superconductor compound

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Author(s):
Bortolozo, Ausdinir D. [1] ; Osorio, Wislei R. [1] ; dos Santos, Carlos Alberto M. [2] ; Machado, Antonio Jefferson S. [2]
Total Authors: 4
Affiliation:
[1] Univ Estadual Campinas, Sch Appl Sci FCA, Res Grp Mfg Adv Mat, UNICAMP, Campus Limeira 1300, Pedro Zaccaria St, BR-13484350 Limeira, SP - Brazil
[2] Sao Paulo Univ State, Sch Engn Lorena, POB 116, BR-12600970 Lorena, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: PHYSICA B-CONDENSED MATTER; v. 494, p. 82-85, AUG 1 2016.
Web of Science Citations: 0
Abstract

A normal-state electrical resistivity of a superconducting Nb5Ge3CO3 compound is investigated. Resistivity data are taken from the superconducting transition temperature T-C at room temperature. The data are discussed based on important theoretical expressions in order to explain the normal-state resistivity of the Nb5Ge3C0.3 compound. Focusing on the best fitting Woodward and Cody model is used. An 0.77 electron-phonon coupling (lambda) is determined, which induces an important role of the electron phonon coupling for a Nb5Ge3C0.3 compound. The saturation of the p(T) at 300 K indicates that the mean free path I of the carriers is actually longer than the unit cell dimensions. The negative curvature of this superconductor is a result of the mean free path non-linear in their resulting perturbation. It is also found that the magnitude of the temperature-dependent (phonon) correlated with the resistivity decreases with the decreasing of the mean free path in the absence of phonons due to an atomic disorder induced by lattice intrinsic defects. (C) 2016 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/12729-5 - Influence of the microwave sintering in superconductor nanolaminated materials belong to MAX family
Grantee:Ausdinir Danilo Bortolozo
Support type: Regular Research Grants
FAPESP's process: 09/00610-8 - Investigation of magnetism and superconductivity in the new alloy of Fe-Se-X and Mg-Ce-X interstitial system
Grantee:Ausdinir Danilo Bortolozo
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 09/08832-0 - Investigation of magnetism and superconductivity in the new alloy of Fe-Se-X and Mg-Ce-X interstitial system
Grantee:Ausdinir Danilo Bortolozo
Support type: Scholarships in Brazil - Young Researchers