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Possible nodal superconducting gap emerging at the Lifshitz transition in heavily hole-doped Ba0.1K0.9Fe2As2
- Source :
- Physical Review B 88, 220508(R) (2013)
- Publication Year :
- 2013
-
Abstract
- We performed a high energy resolution ARPES investigation of over-doped Ba0.1K0.9Fe2As2 with T_c= 9 K. The Fermi surface topology of this material is similar to that of KFe2As2 and differs from that of slightly less doped Ba0.3K0.7Fe2As2, implying that a Lifshitz transition occurred between x=0.7 and x=0.9. Albeit for a vertical node found at the tip of the emerging off-M-centered Fermi surface pocket lobes, the superconducting gap structure is similar to that of Ba0.3K0.7Fe2As2, suggesting that the paring interaction is not driven by the Fermi surface topology.<br />Comment: 5 pages, 4 figures
Details
- Database :
- arXiv
- Journal :
- Physical Review B 88, 220508(R) (2013)
- Publication Type :
- Report
- Accession number :
- edsarx.1308.3888
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.88.220508