Even Parity, Orbital Singlet and Spin Triplet Pairing for Superconducting $La(O_{1-x}F_x)FeAs$

Xi Dai; Zhong Fang; Yi Zhou; Fu-chun Zhang

doi:10.1103/physrevlett.101.057008

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arXiv · 0803.3982

Even Parity, Orbital Singlet and Spin Triplet Pairing for Superconducting $La(O_{1-x}F_x)FeAs$

Xi Dai·Zhong Fang·Yi Zhou·Fu-chun Zhang

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Abstract

In the present paper, we propose the parity even,orbital singlet and spin triplet pairing state as the ground state of the newly discovered super-conductor $LaO_{1-x}F_xFeAs$.The pairing mechanism involves both the special shape of the electron fermi surface and the strong ferromagnetic fluctuation induced by Hund's rule coupling.The special behavior of the Bogoliubov quasi-particle spectrum may leads to "Fermi arc" like anisotropy super-conducting gap, which can be detected by angle resolved photo emission(ARPES).The impurity effects are also discussed.

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Xi Dai, Zhong Fang, Yi Zhou, Fu-chun Zhang. 2008-03-31. Even Parity, Orbital Singlet and Spin Triplet Pairing for Superconducting $La(O_{1-x}F_x)FeAs$. https://doi.org/10.1103/physrevlett.101.057008

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