Author： Richard P Qian T Ding H
Publisher： IOP Publishing
E-ISSN： 1361-648X|27|29|293203-293228
ISSN： 0953-8984
Source： Journal of Physics: Condensed Matter, Vol.27, Iss.29, 2015-07, pp. : 293203-293228
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Abstract
Its direct momentum sensitivity confers to angle-resolved photoemission spectroscopy (ARPES) a unique perspective in investigating the superconducting gap of multi-band systems. In this review we discuss ARPES studies on the superconducting gap of high-temperature Fe-based superconductors. We show that while Fermi-surface-driven pairing mechanisms fail to provide a universal scheme for the Fe-based superconductors, theoretical approaches based on short-range interactions lead to a more robust and universal description of superconductivity in these materials. Our findings are also discussed in the broader context of unconventional superconductivity.
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