Classification of the Super-conducting order parameters under the point group symmetry for a multi-band system: application to LaOFeAs

2008/05/06 by Zhi-Hui Wang, Zhi‐Hui Wang, Hui Tang +6 · 1 citation
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Iron-based superconductors research #Magnetic and transport properties of perovskites and related materials #Rare-earth and actinide compounds #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con) #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.0805.0736

12 pages, 1 figure

arxiv created 2008/05/06 · openalex publication_date 2008/05/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

All the possible super-conducting order parameters for the LaOFeAs system are classified by their transformation under the complete crystal symmetry. The general forms of the super-conducting gap functions for each class are discussed. We find that the gap functions in such a multi-band system belong to three types, full gap, nodal type and finite ``Fermi arc'' type. Possible physical consequences caused by different types of gap functions are also discussed.

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• Competitions of magnetism and superconductivity in FeAs-based materials

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