Coexistence of Dirac-cone states and superconductivity in iron pnictide Ba(Fe1−xRuxAs)2
Y. Tanabe, K. K. Huynh, S. Heguri, G. Mu, T. Urata, J. Xu, R. Nouchi, N. Mitoma, K. Tanigaki
DOI 10.1103/PhysRevB.84.100508 · Physical Review B
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Abstract
The Ru doping effect on the Dirac-cone states is investigated in iron pnictide superconductors Ba(Fe1−xRuxAs)2 using transverse magnetoresistance (RM) measurements as a function of temperature. The linear development of RM against magnetic field B is observed for x=0–0.244 at low temperatures below the antiferromagnetic transition. The B-linear RM is interpreted in terms of the quantum limit of the Dirac-cone states by using the model proposed by Abrikosov. An intriguing evidence is shown that the Dirac-cone state persists on the electronic phase diagram where antiferromagnetism and superconductivity coexist.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba(Fe1-xRuxAs)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21.4 | Pressure not reported | onset |
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