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

Zhi-Hui Wang; Hui Tang; Zhong Fang; Xi Dai

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arXiv · 0805.0736

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

Zhi-Hui Wang·Hui Tang·Zhong Fang·Xi Dai

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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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Zhi-Hui Wang, Hui Tang, Zhong Fang, Xi Dai. 2008-05-06. Classification of the Super-conducting order parameters under the point group symmetry for a multi-band system: application to LaOFeAs. https://arxiv.org/abs/0805.0736

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