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Chin. Phys. B, 2016, Vol. 25(9): 097401    DOI: 10.1088/1674-1056/25/9/097401
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Thermal fluctuation conductivity and dimensionality in iron-based superconductors

Rui Wang(王蕊)1,2, Ding-Ping Li(李定平)1,2
1. School of Physics, Peking University, Beijing 100871, China;
2. Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
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 BaFe2-xNixAs2. We demonstrate that LaOFeAs shows layered behavior, while BaFe2-xNixAs2 is more of a 3D feature. The conductivity in the region near Tc 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      Published:  05 September 2016
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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