Effective Interacting Hamiltonian and Pairing Symmetry of LaOFeAs

2008/06/02 by Junren Shi, Shi, Junren · 1 citation
Materials Science · Physics and Astronomy · #Iron-based superconductors research #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.0806.0259

4 pages, 2 figures, update figures, table and discussion

arxiv created 2008/06/11 · arxiv updated 2009/12/01

Abstract

We establish the general form of effective interacting Hamiltonian for LaOFeAs system based on the symmetry consideration. The peculiar symmetry property of the electron states yields unusual form of electron-electron interaction. Based on the general effective Hamiltonian, we determine all the ten possible pairing states. More physical considerations would further reduce the list of the candidates for the pairing state.

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• Competitions of magnetism and superconductivity in FeAs-based materials

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