Local breaking of four-fold rotational symmetry by short-range magnetic order in heavily overdoped Ba(Fe${}_{1-x}$Cu${}_x$)${}_2$As${}_2$

Abstract

We investigate Cu-doped Ba(Fe${}_{1-x}$Cu${}_x$)${}_2$As${}_2$ with transport, magnetic susceptibility, and elastic neutron scattering measurements. In the heavily Cu-doped regime where long-range stripe-type antiferromagnetic order in BaFe${}_2$As${}_2$ is suppressed, Ba(Fe${}_{1-x}$Cu${}_x$)${}_2$As${}_2$ (0.145 $\le x\le$ 0.553) samples exhibit spin-glass-like behavior in magnetic susceptibility and insulating-like temperature dependence in electrical transport. Using elastic neutron scattering, we find stripe-type short-range magnetic order in the spin-glass region identified by susceptibility measurements. The persistence of short-range magnetic order over a large doping range in Ba(Fe${}_{1-x}$Cu${}_x$)${}_2$As${}_2$ likely arises from local arrangements of Fe and Cu that favor magnetic order, with Cu acting as vacancies relieving magnetic frustration and degeneracy. These results indicate locally broken four-fold rotational symmetry, suggesting that stripe-type magnetism is ubiquitous in iron pnictides.

arXiv commentaccepted by Physical Review B Rapid Communications

References in corpus (29)

• Superconductivity in Iron Compounds
• Nematic order in iron superconductors - who is in the driver's seat?
• Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family
• Antiferromagnetic order and spin dynamics in iron-based superconductors
• Strong Correlations and Magnetic Frustration in the High Tc Iron Pnictides
• FeAs-based superconductivity: a case study of the effects of transition metal doping on BaFe2As2
• Preemptive nematic order, pseudogap, and orbital order in the iron pnictides
• Ubiquitous signatures of nematic quantum criticality in optimally doped Fe-based superconductors
• Temperature-doping phase diagrams for Ba(Fe1-xTMx)2As2(TM=Ni, Cu, Cu / Co) single crystals
• Broken translational and rotational symmetry via charge stripe order in underdoped YBCO
• Magnetically-Driven Suppression of Nematic Order in an Iron-Based Superconductor
• Where Are the Extra d Electrons in Transition-Metal Substituted Fe Pnictides?
• Double-Q spin-density wave in iron arsenide superconductors
• A magnetic origin for high temperature superconductivity in iron pnictides
• Do Transition Metal Substitutions Dope Carriers in Iron Based Superconductors?
• Metal - Insulator transition in Fe1.01-xCuxSe
• Spin reorientation in Na-doped BaFe${}_2$As${}_2$ studied by neutron diffraction
• Crystal Growth and Physical Properties of SrCu2As2, SrCu2Sb2 and BaCu2Sb2
• Tetragonal magnetic phase in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ from x-ray and neutron diffraction
• Short-range cluster spin glass near optimal superconductivity in BaFe${}_{2-x}$Ni${}_x$As${}_2$
• A Mott insulator continuously connected to iron pnictide superconductors
• Electronic Structure, Localization and Spin-State Transition in Cu-substituted FeSe: Fe${}_{1-x}$Cu${}_x$Se
• Phase diagram and physical properties of NaFe${}_{1-x}$Cu${}_x$As single crystals
• Effects of transition metal substitutions on the incommensurability and spin fluctuations in BaFe2As2 by elastic and inelastic neutron scattering
• Strong similarities between the local electronic structure of insulating iron pnictide and lightly doped cuprate
• Spin dynamics near a putative antiferromagnetic quantum critical point in Cu substituted BaFe${}_2$As${}_2$ and its relation to high-temperature superconductivity
• Phase diagram and neutron spin resonance of superconducting NaFe${}_{1-x}$Cu${}_x$As
• Observation of charge accumulation and onsite Coulomb repulsion at transition metal impurities in the iron pnictides
• Non-rigid band shift and non-monotonic electronic structure changes upon doping in the normal state of the pnictide high temperature superconductor Ba2(Fe1-xCox)2As2

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