Consistency between Itinerant and Local-Moment Pictures for Superconductivity in Alkaline Iron Selenide Superconductors

doi:10.1088/0256-307X/31/6/067404

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Abstract：We study the superconducting pairing in an effective one-orbital model for alkaline iron-selenide superconductors. In both itinerant and local-moment pictures, we find that the nearest-neighbor hopping t₁ plays a crucial role. The pairing symmetry changes from s-wave to d-wave as t₁ is enhanced. For a reasonable t₁ relevant to the experiment, the pairing symmetry is s-wave in both pictures, in agreement with the angle-resolved photo-emission. The results resolve the previous theoretical inconsistency in the two pictures.

出版日期: 2014-05-26

:	74.20.Rp	(Pairing symmetries (other than s-wave))
	74.70.-b	(Superconducting materials other than cuprates)
	71.27.+a	(Strongly correlated electron systems; heavy fermions)

引用本文:

. [J]. 中国物理快报, 2014, 31(06): 67404-067404.
LI Hai-Chao, XIANG Yuan-Yuan, WANG Qiang-Hua. Consistency between Itinerant and Local-Moment Pictures for Superconductivity in Alkaline Iron Selenide Superconductors. Chin. Phys. Lett., 2014, 31(06): 67404-067404.

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https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/31/6/067404 或 https://cpl.iphy.ac.cn/CN/Y2014/V31/I06/67404

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