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- Title
Anisotropy of the superconducting gap in the iron-based superconductor BaFe<sub>2</sub>(As<sub>1-x</sub>P<sub>x</sub>)<sub>2</sub>.
- Authors
Yoshida, T.; Ideta, S.; Shimojima, T.; Malaeb, W.; Shinada, K.; Suzuki, H.; Nishi, I.; Fujimori, A.; Ishizaka, K.; Shin, S.; Nakashima, Y.; Anzai, H.; Arita, M.; Ino, A.; Namatame, H.; Taniguchi, M.; Kumigashira, H.; Ono, K.; Kasahara, S.; Shibauchi, T.
- Abstract
We report peculiar momentum-dependent anisotropy in the superconducting gap observed by angle-resolved photoemission spectroscopy in BaFe2(As1-xPx)2 (x = 0.30, Tc = 30 K). Strongly anisotropic gap has been found only in the electron Fermi surface while the gap on the entire hole Fermi surfaces are nearly isotropic. These results are inconsistent with horizontal nodes but are consistent with modified s± gap with nodal loops. We have shown that the complicated gap modulation can be theoretically reproduced by considering both spin and orbital fluctuations.
- Subjects
ANISOTROPY; IRON-based superconductors; PHOTOELECTRON spectroscopy; FERMI surfaces; MODULUS of rigidity
- Publication
Scientific Reports, 2014, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep07292