Journal of Superconductivity and Novel Magnetism, ( ISI ), Volume (33), No (8), Year (2020-5) , Pages (2535-2541)

Title : ( Angular Dependence of Fluctuation Conductivity in BaFe1.9Co0.1As2 Single Crystal )

Authors: M. Asiyaban , Shaban Reza Ghorbani , S. N. Mirnia , X. L. Wang ,

Citation: BibTeX | EndNote

Abstract

Fluctuation conductivity of electron-doped BaFe1.9Co0.1As2 single crystal is investigated by measurement of electrical resistivity under magnetic fields up to 13 T at different angles of θ = 0, 45 and 90 near mean-field transition temperature, where θ is the angle between the applied magnetic field and the axis perpendicular to the ab plane. The mean-field transition temperature is determined using the peak of dR/dT curves. Using the Aslamazov–Larkin theory, four main regions are identified corresponding to 3D, 2D, 1D, and SW regions, respectively, for each angle at different magnetic fields. The 1D region is a sign of conducting charge strips that are believed that these 1D conducting strips might be responsible for the occurrence of high-temperature superconductivity. Anisotropy increases as it approaches Tc, suggesting unconventional superconductivity that might be due to multiband effects in crystal. Results show that the zero-temperature coherence length in the c-direction ξ(0), the effective distance between the conducting layers d, and the channel cross section s decrease with increase in the magnetic field.

Keywords

, BaFe1.9Co0.1As2 single crystal, Fluctuation conductivity, Dimensionality
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@article{paperid:1079684,
author = {مرتضی آسیابان and Ghorbani, Shaban Reza and میرنیا and شیاولین وانگ},
title = {Angular Dependence of Fluctuation Conductivity in BaFe1.9Co0.1As2 Single Crystal},
journal = {Journal of Superconductivity and Novel Magnetism},
year = {2020},
volume = {33},
number = {8},
month = {May},
issn = {1557-1939},
pages = {2535--2541},
numpages = {6},
keywords = {BaFe1.9Co0.1As2 single crystal; Fluctuation conductivity; Dimensionality},
}

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%0 Journal Article
%T Angular Dependence of Fluctuation Conductivity in BaFe1.9Co0.1As2 Single Crystal
%A مرتضی آسیابان
%A Ghorbani, Shaban Reza
%A میرنیا
%A شیاولین وانگ
%J Journal of Superconductivity and Novel Magnetism
%@ 1557-1939
%D 2020

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