Even parity, orbital singlet, and spin triplet pairing for superconducting LaFeAsO1-xFx.
Even parity, orbital singlet, and spin triplet pairing for superconducting LaFeAsO1-xFx.
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DOI：
10.1103/physrevlett.101.057008
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发表时间：
2008-03
影响因子：
8.6
通讯作者：
X. Dai;Z. Fang;Yi Zhou;Fu-Chun Zhang
中科院分区：
文献类型：
--
作者：
X. Dai;Z. Fang;Yi Zhou;Fu-Chun Zhang
We examine the spin-triplet superconducting state of even parity mediated by ferromagnetic Hund's coupling between electrons in two almost degenerate orbital bands. This state may be realized in the recently discovered LaFeAsO(1-x)F(x). It is robust against orbital-independent disorder. The splitting of the orbital degeneracy suppresses superconductivity and leads to an anisotropic spectrum in the Bogoliubov quasiparticle. The former predicts a strong pressure dependence of T(c) and the latter predicts Fermi pockets, which may be tested in angle resolved photoemission spectra.
