Electronic Specific Heat of Iron Pnictides Based on Electron-Cooper Pair Interaction

doi:10.4236/oalib.1105107

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Open Access Library Journal 5 2018

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Electronic Specific Heat of Iron Pnictides Based on Electron-Cooper Pair Interaction

DOI: 10.4236/oalib.1105107, PP. 1-11

Abel Mukubwa

Subject Areas: Chemical Engineering & Technology

Keywords: Superconductivity, Iron Pnictides, Specific Heat Capacity

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Abstract

The discovery of iron pnictides in 2006 added on the number of materials that have the potential to transmit electricity with close zero d.c resistance. High-temperature iron-based superconductors have been obtained through modification, mostly by doping, of the initially low-temperature iron-based superconductors. Unlike in LTSC, the energy gap in HTSC requires a theory, beyond spin fluctuations, to explain its anisotropy. This study seeks to establish a common ground between iron pnictides and cuprates towards explaining high temperature superconductivity. There is a general consensus on the existence of Cooper pairs in these systems. In addition to this, experimental results have revealed the existence of electron-boson coupling in iron pnictides. These results make it viable to study the interaction between an electron and a Cooper pair in iron based superconductors (IBSC). In this study, Bogoliubov-Valatini transformation has been used in determining the electronic specific heat based on the interaction between an electron and a Cooper pair in high-temperature IBSC, namely, Ca_0.33Na_0.6Fe₂As₂ and SmFeAsO_0.8F_0.2. We record the theoretical electronic specific heat of CeFeAsO_0.84F_0.16 and SmFeAsO_0.8F_0.2 as 164.3 mJ mol^-1 K^-2 and 101.6 mJ mol^-1 K^-2 respectively.

Cite this paper

Mukubwa, A. (2018). Electronic Specific Heat of Iron Pnictides Based on Electron-Cooper Pair Interaction. Open Access Library Journal, 5, e5107. doi: http://dx.doi.org/10.4236/oalib.1105107.

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