Electron-conduction mechanism and specific heat above transition temperature in LaFeAsO and BaFe(2)As(2) superconductors

TL;DR

This paper uses ionization energy theory to analyze resistivity and specific heat in LaFeAsO and BaFe2As2 superconductors above their transition temperatures, revealing insights into their electron conduction mechanisms.

Contribution

It provides a detailed explanation of electron conduction above the transition temperature in Pnictide superconductors, linking it to other strongly correlated materials and predicting effects of various dopants.

Findings

Electron conduction mechanisms are consistent across Pnictides and other correlated materials.

Resistivity and specific heat curves vary with doping elements.

Superconductivity is not solely determined by properties above the transition temperature.

Abstract

The ionization energy theory is used to calculate the evolution of the resistivity and specific heat curves with respect to different doping elements in the recently discovered superconducting Pnictide materials. Subsequently, the electron-conduction mechanism in the Pnictides above the structural transition temperature is explained unambiguously, which is also consistent with other strongly correlated matter, such as cuprates, manganites, titanates and magnetic semiconductors. Therefore, the superconductivity is not uniquely corresponds to the electronic properties above the structural transition temperature. Detailed prediction are given on these compounds for various doping elements, namely, La(Sm,Ce,Ba,Sr,Ca)FeAsO(F,Cl,Br) and Ba(Sr,Ca,K,Rb,Cs)Fe(2)As(2).