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Evidence for excluding the possibility of 𝑑-wave superconducting-gap symmetry in Ba-doped KFe2As2

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Evidence for excluding the possibility of 𝑑-wave superconducting-gap symmetry in Ba-doped KFe2As2

Ota, Y.; Okazaki, K.; Kotani, Y.; Shimojima, T.; Malaeb, W.; Watanabe, S.; Chen, C.-T.; Kihou, K.
URI: http://hdl.handle.net/10725/16681
URL: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.89.081103
DOI: https://doi.org/10.1103/PhysRevB.89.081103
Date: 2014-02-04
Terms of Use: This item is made available under the terms and conditions applicable to " Article ", as set forth at: http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php

Abstract:

We have investigated the superconducting (SC)-gap anisotropy for several Ba-doped KFe2As2 samples using laser-based angle-resolved photoemission spectroscopy. We show that the SC-gap anisotropy and node positions drastically change with a small amount of Ba doping. Our results totally exclude a possibility of 𝑑-wave symmetry and strongly suggest that both spin and orbital fluctuations are important for the pairing interaction in the Ba-doped K122.

Citation:

Ota, Y., Okazaki, K., Kotani, Y., Shimojima, T., Malaeb, W., Watanabe, S., ... & Shin, S. (2014). Evidence for excluding the possibility of d-wave superconducting-gap symmetry in Ba-doped KFe 2 As 2. Physical Review B, 89(8), 081103.

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