Electronic Specific Heat of Iron Pnictides Based on Electron-Cooper Pair Interaction - Open Access Library Journal

OALibJ > Vol.5 No.12, December 2018

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

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DOI: 10.4236/oalib.1105107 465 Downloads 1,302 Views Citations

Author(s)

Abel Mukubwa

Affiliation(s)

Department of Science, Technology and Engineering, Faculty of Science, Kibabii University, Bungoma, Kenya.

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.

KEYWORDS

Superconductivity, Iron Pnictides, Specific Heat Capacity

Share and Cite:

Mukubwa, A. (2018) Electronic Specific Heat of Iron Pnictides Based on Electron-Cooper Pair Interaction. Open Access Library Journal, 5, 1-11. doi: 10.4236/oalib.1105107.

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