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

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25 Citations (Scopus)

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.

Original languageEnglish
Article number100508
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number10
DOIs
Publication statusPublished - 2011 Sep 19

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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