High-resolution angle-resolved photoemission spectroscopy study of the electronic structure of EuFe2As2

Abstract

We report the high-resolution angle-resolved photoemission spectroscopy studies of electronic structure of EuFe2As2. The paramagnetic state data are found to be consistent with density-functional calculations. In the antiferromagnetic ordering state of Fe, our results show that the band splitting, folding, and hybridization evolve with temperature, which cannot be explained by a simple folding picture. Detailed measurements reveal that a tiny electron Fermi pocket and a tiny hole pocket are formed near (pi,pi) in the (0,0)-(pi,pi) direction, which qualitatively agree with the results of quantum oscillations, considering kz variation of Fermi surface. Furthermore, no noticeable change within the energy resolution is observed across the antiferromagnetic transition of Eu2+ ordering, suggesting weak coupling between Eu sublattice and FeAs sublattice.

7 pages, 7 figures

References in corpus (25)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Superconductivity at 43 K in Samarium-arsenide Oxides $SmFeAs{O}_{1-x}{F}_x$
• Spin density wave anomaly at 140 K in the ternary iron arsenide BaFe2As2
• Superconductivity up to 37 K in (A1-xSrx)Fe2As2 with A=K and Cs
• Thorium-doping induced superconductivity up to 56 K in Gd1-xThxFeAsO
• Electronic Structure and Doping in BaFe${}_2$As${}_2$ and LiFeAs: Density Functional Calculations
• Coexistence of the spin-density-wave and superconductivity in the (Ba,K)Fe2As2
• Origin of the spin density wave instability in AFe${}_2$As${}_2$ (A=Ba, Sr) as revealed by optical spectroscopy
• High-Temperature Superconductivity in Eu0.5K0.5Fe2As2
• Antiferromagnetic transition in EuFe${}_2$As${}_2$: A possible parent compound for superconductors
• Fermi surface topology and low-lying quasiparticle dynamics of parent Fe${}_{1+x}$Te/Se Superconductor by orbital-polarization resolved ARPES
• Different resistivity response to spin density wave and superconductivity at 20 K in $C{a}_{1-x}N{a}_{x}F{e}_{2}A{s}_2$
• Magnetic structure of EuFe2As2 determined by single crystal neutron diffraction
• Microscopic origin of magnetism and magnetic interactions in ferropnictides
• Quantum oscillations in the parent magnetic phase of an iron arsenide high temperature superconductor
• Unconventional electronic reconstruction in undoped (Ba,Sr)Fe${}_2$As${}_2$ across the spin density wave transition
• Electronic Structure of the BaFe${}_2$As${}_2$ Family of Iron Pnictides
• Electronic Structure of Prototype AFe_2As_2 and ReOFeAs High-Temperature Superconductors: a Comparison
• Quantum oscillations in the parent pnictide BaFe${}_2$As${}_2$ : itinerant electrons in the reconstructed state
• Effects of the magnetic orderings on the dynamical conductivity: optical investigations of EuFe${}_2$As${}_2$ single crystals
• Superconductivity at 34.7 K in the iron arsenide Eu0.7Na0.3Fe2As2
• Transport properties and superconductivity in $B{a}_{1-x}{M}_{x}F{e}_{2}A{s}_2$ (M=La and K) with double FeAs layers
• Genesis of coexisting itinerant and localized electrons in Iron Pnictides
• Droplet-like Fermi surfaces in the anti-ferromagnetic phase of EuFe${}_2$As${}_2$, an Fe-pnictide superconductor parent compound
• Interplay between superconductivity and magnetism in K-doped EuFe2As2

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• Dramatic Changes in the Electronic Structure Upon Transition to the Collapsed Tetragonal Phase in CaFe2As2
• Superconductivity and ferromagnetism in EuFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Surface and bulk electronic structures of LaOFeAs studied by angle resolved photoemission spectroscopy
• Surface-driven electronic structure in LaFeAsO studied by angle resolved photoemission spectroscopy
• Doping dependence of the Nernst effect in Eu(Fe1-xCox)2As2 - departure from Dirac fermions physics
• Angle-resolved photoemission study of the role of nesting and orbital orderings in the antiferromagnetic phase of BaFe2As2
• Electronic structure of BaNi${}_2$As${}_2$
• Electron spin resonance in Eu based Fe pnictides
• Angle-resolved photoemission spectroscopy observation of anomalous electronic states in EuFe${}_2$As${}_{2-x}$P${}_x$
• Drastic electronic structure reconstruction of Ca${}_{1-x}$Pr${}_x$Fe${}_2$As${}_2$ in the collapsed tetragonal phase
• Quantum Oscillations in EuFe2As2 single crystals
• Experimental and theoretical electronic structure of EuRh2As2
• Temperature and doping dependence of normal state spectral properties in a two-orbital model for ferropnictides
• Band structure and Fermi surfaces of the reentrant ferromagnetic superconductor Eu(Fe0.86Ir0.14)2As2
• Magneto-orbital coupling in iron pnictides