In-plane electronic anisotropy in the antiferromagnetic-orthorhombic phase of isovalent-substituted Ba(Fe${}_{1-x}$Ru${}_x$)${}_2$As${}_2$

Abstract

We have studied the anisotropy in the in-plane resistivity and the electronic structure of isovalent Ru-substituted BaFe${}_2$As${}_2$ in the antiferromagnetic-orthorhombic phase using well-annealed crystals. The anisotropy in the residual resistivity component increases in proportional to the Ru dopant concentration, as in the case of Co-doped compounds. On the other hand, both the residual resistivity and the resistivity anisotropy induced by isovalent Ru substitution is found to be one order of magnitude smaller than those induced by heterovalent Co substitution. Combined with angle-resolved photoemission spectroscopy results, which show almost the same anisotropic band structure both for the parent and Ru-substituted compounds, we confirm the scenario that the anisotropy in the residual resistivity arises from anisotropic impurity scattering in the magneto-structurally ordered phase rather than directly from the anisotropic band structure of that phase.

13 pages, 4 figures

References in corpus (8)

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Cited by in corpus (8)

• Electronic nematic susceptibility of iron-based superconductors
• The transport-structural correspondence across the nematic phase transition probed by elasto-x-ray diffraction
• Electronic state unfolding for plane waves: energy bands, Fermi surfaces and spectral functions
• Comprehensive study of out-of-plane transport properties in BaFe${}_2$As${}_2$: Three-dimensional electronic state and effect of chemical substitution
• Competition between orthorhombic and re-entrant tetragonal phases in underdoped Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ probed by the response to controlled disorder
• Multi-band effects in in-plane resistivity anisotropy of strain-detwinned disordered Ba(Fe${}_{1-x}$Ru${}_x$)${}_2$As${}_2$
• Effect of controlled point-like disorder induced by 2.5 MeV electron irradiation on nematic resistivity anisotropy of hole-doped (Ba,K)Fe${}_2$As${}_2$
• Anisotropy in the thermal hysteresis of resistivity and charge density wave nature of single crystal SrFeO3-delta: X-ray absorption and photoemission studies