Thermal fluctuation conductivity and dimensionality in iron-based superconductors

doi:10.1088/1674-1056/25/9/097401

Abstract

The time-dependent Ginzburg-Landau Lawrence-Doniach model is used to investigate the superconducting fluctuation electrical conductivities. The theoretical result based on the self-consistent Gaussian approximation is used to fit the transport measurement data of iron-based superconductors F-doped LaOFeAs and BaFe_2-xNi_xAs₂. We demonstrate that LaOFeAs shows layered behavior, while BaFe_2-xNi_xAs₂ is more of a 3D feature. The conductivity in the region near T_c is well described by the theoretical formula.

Keywords: time-dependent Ginzburg-Landau Lawrence-Doniach model iron-based superconductors conductivity dimensionality

Received: 02 May 2016
Revised: 06 June 2016
Accepted manuscript online:

PACS:	74.25.Ha	(Magnetic properties including vortex structures and related phenomena)
	74.40.-n	(Fluctuation phenomena)
	74.70.Xa	(Pnictides and chalcogenides)
	72.80.-r	(Conductivity of specific materials)

Fund:

Project supported by the National Natural Science Foundation of China (Grant No. 11274018).

Corresponding Authors: Rui Wang, Ding-Ping Li
E-mail: ruiwang95@126.com;lidp@pku.edu.cn

Cite this article:

Rui Wang(王蕊), Ding-Ping Li(李定平) Thermal fluctuation conductivity and dimensionality in iron-based superconductors 2016 Chin. Phys. B 25 097401

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