2020
DOI: 10.1103/physrevlett.124.247002
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Isostructural Spin-Density-Wave and Superconducting Gap Anisotropies in Iron-Arsenide Superconductors

Abstract: When passing through a phase transition, electronic system saves energy by opening energy gaps at the Fermi level. Delineating the energy gap anisotropy provides insights into the origin of the interactions that drive the phase transition. Here, we report the angle-resolved photoemission spectroscopy (ARPES) study on the detailed gap anisotropies in both the tetragonal magnetic and superconducting phases in Sr 1−x Na x Fe 2 As 2. First, we found that the spin-density-wave (SDW) gap is strongly anisotropic in t… Show more

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Cited by 4 publications
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