A Multiband Model for LaO_1-xF_xFeAs

Abstract:

Based on electronic structure calculations using WIEN2k code for the iron oxypnictide LaO1-xFxFeAs a multi-band model is proposed. Within the BCS framework a generalized Fermi surface with overlapping bands is introduced. s-wave pairing symmetry and different doping values are considered. This model is used to describe some properties of iron-based oxypnictide superconductors as function of the coupling parameter as well as other relevant parameters of the model. In order to get numerical results the experimental data of LaO1-xFxFeAs with several doping concentrations provide the input of this work.

• Periodical: Advances in Science and Technology (Volume 75)
• Pages: 167-172
• DOI: https://doi.org/10.4028/www.scientific.net/AST.75.167
• Online since: October 2010
• Authors: Gabriela Murguía-Romero, Susana Orozco, María de los Ángeles Ortiz, Rosa María Méndez-Moreno, Pablo de la Mora
• Keywords: Band Overlap, High Tc Superconductivity, Iron-Based Oxypnictide Superconductor, LaOFeAs

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