Generalized BCS Equations and the Iron-Pnictide Superconductors
Generalized BCS Equations and the Iron-Pnictide Superconductors作者机构：Instituto de Investigaciones en Materiales Universidad Nacional Autónoma de México México DF México Theory Group School of Environmental Sciences Jawaharlal Nehru University New Delhi India
出 版 物：《Journal of Modern Physics》 (现代物理（英文）)
年 卷 期：2013年第4卷第4期
页 面：474-480页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Generalized BCS Equation Iron-Pnictide Superconductors Multiple Gaps
摘 要：A detailed quantitative study of the pnictide composite superconductor (CS) Ba0.6K0.4Fe2As2 is presented in the frame-work of the recently derived set of generalized BCS equations. Invoking multiple Debye temperatures to take into account anisotropy of the CS, we address the current experimental data on its Tc and the (not so clear-cut) gap-values via different theoretical scenarios that attempt to identify the ion species responsible for pairing in it. This is done with the aid of the Bogoliubov’s restriction on the BCS dimensionless electron-phonon coupling constant. Significantly, our study sheds light on the gaps which have recently been observed in different iron-pnictide CSs as nodes or line-nodes on the Fermi surface and have evinced considerable interest.
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