Carrier localization due to local magnetic order induced by magnetic impurities in Ba(Fe${}_{1-x}$TM${}_x$)${}_2$As${}_2$ (TM = Mn and Cr) as seen via optical spectra

Abstract

The charge dynamics of Ba(Fe${}_{1-x}$TM${}_x$)${}_2$As${}_2$ (TM = Mn and Cr) has been investigated by optical spectroscopy. It was found that in addition to the strong suppression of the coherent charge transport, the magnetic impurity induces a novel spectral feature related to the carrier localization in the far-infrared region above the antiferromagnetic transition temperature. We attribute it to the cooperative effect between conduction electrons and local magnetic order induced by magnetic impurities. The present results demonstrate that Mn and Cr are not conventional magnetic pair-breakers in iron pnictides.

arXiv comment15 pages, 7 figures, accepted for publication in Phys. Rev. B

References in corpus (28)

• Superconductivity in Iron Compounds
• Gap symmetry and structure of Fe-based superconductors
• Strong electronic correlations from Hund's coupling
• Electrodynamics of Correlated Electron Materials
• Effects of Co substitution on thermodynamic and transport properties and anisotropic $H_{c2}$ in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ single crystals
• Origin of the spin density wave instability in AFe${}_2$As${}_2$ (A=Ba, Sr) as revealed by optical spectroscopy
• Evolution of the optical spectrum with doping in iron pnictides Ba(Fe1-xCox)2As2
• Hole-doped BaFe2-xCrxAs2 Crystals: A Case of Non-superconductivity
• Anisotropy of the in-plane resistivity of underdoped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ superconductors induced by impurity scattering in the antiferromagnetic orthorhombic phase
• Antiferromagnetic ordering in the absence of a structural distortion in Ba(Fe{1-x}Mn{x})2As2
• Competing magnetic ground states in non-superconducting Ba(Fe1-xCrx)2As2
• Formation of finite antiferromagnetic clusters and the effect of electronic phase separation in Pr{_0.5}Ca{_0.5}Mn{_0.975}Al{_0.025}O{_3}
• Physical and magnetic properties of Ba(Fe_(1-x)Mn_x)_2As_2 single crystals
• Normal-state charge dynamics in doped BaFe2As2: Roles of doping and necessary ingredients for superconductivity
• Suppression of superconductivity by Neel-type magnetic fluctuations in the iron pnictides
• Competition between stripe and checkerboard magnetic instabilities in Mn-doped BaFe2As2
• Mn local moments prevent superconductivity in iron-pnictides Ba(Fe 1-x Mn x)2As2
• Possible realization of an antiferromagnetic Griffiths phase in Ba[Fe(1-x)Mn(x)](2)As(2)
• Enhancing magnetic stripe order in iron pnictides by RKKY exchange interactions
• Effects of Zn and Ni substitution on the Cu-spin dynamics and superconductivity in La_2-x_Sr_x_Cu_1-y_(Zn,Ni)_y_O_4_ with x=0.15-0.20 studied by the muon spin relaxation and magnetic susceptibility
• Optical conductivity of iron-based superconductors
• Absence of Superconductivity in the "hole-doped" Fe pnictide Ba(Fe${}_{1-x}$Mn${}_x$)${}_2$As${}_2$: Photoemission and X-ray Absorption Spectroscopy Studies
• Impact of local-moment fluctuations on the magnetic degeneracy of iron arsenide superconductors
• Importance of Fermi Surface Topology for In-Plane Resistivity Anisotropy in Hole- and Electron-Doped Ba(Fe${}_{1-x}$TM${}_x$)${}_2$As${}_2$ (TM=Cr, Mn and Co)
• Kondo-like mass enhancement of Dirac fermion in iron pnictides Ba(Fe${}_{1-x}$Mn${}_x$As)${}_2$
• Far-infrared optical conductivity of CeCu2Si2
• Electronic structure and quantum criticality in Ba(Fe${}_{1-x-y}$Co${}_x$Mn${}_y$)${}_2$As${}_2$, an ARPES study
• Optical Study of BaFe${}_2$As${}_2$ under pressure: Coexistence of spin-density-wave gap and superconductivity

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