Anisotropic Superconducting Gap in Optimally Doped Iron–Based Material
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2020-08
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Journal Article
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Abstract
We offer a comprehensive optical investigation of the optimally hole-doped Ba0.6K0.4Fe2As2 over a broad spectral range, as a function of temperature and of tunable applied stress, which acts as an external symmetry breaking field. We show that there is a large electronic nematicity at optimal doping which extends right under the superconducting dome and implies an anisotropy of the superconducting energy gaps. © 2019 Springer.
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published
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Volume
33 (8)
Pages / Article No.
2313 - 2318
Publisher
Springer
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Subject
Nematicity; Iron-based superconductors; Optical properties