Temperature dependence of the electronic structure and Fermi-surface reconstruction of Eu(1-x)Gd(x)O through the ferromagnetic metal-insulator transition

Abstract

We present angle-resolved photoemission spectroscopy of Eu(1-x)Gd(x)O through the ferromagnetic metal-insulator transition. In the ferromagnetic phase, we observe Fermi surface pockets at the Brillouin zone boundary, consistent with density functional theory, which predicts a half metal. Upon warming into the paramagnetic state, our results reveal a strong momentum-dependent evolution of the electronic structure, where the metallic states at the zone boundary are replaced by pseudogapped states at the Brillouin zone center due to the absence of magnetic long-range order of the Eu 4f moments.

5 pages, 5 figures, supplementary information (see other files)

References in corpus (13)

• Missing Quasiparticles and the Chemical Potential Puzzle in the Doping Evolution of the Cuprate Superconductors
• Nodal quasiparticle in pseudogapped colossal magnetoresistive manganites
• Exchange Splitting and Charge Carrier Spin Polarization in EuO
• Fermi Surface Nesting and Nanoscale Fluctuating Charge/Orbital Ordering in Colossal Magnetoresistive Oxides
• Strain-induced ferroelectricity in simple rocksalt binary oxides
• Epitaxial influence on the ferromagnetic semiconducotor EuO
• High-energy photoemission on Fe3O4: Small polaron physics and the Verwey transition
• Onset of ferromagnetism in low-doped GaMnAs
• Epitaxial EuO Thin Films on GaAs
• Epitaxy, stoichiometry, and magnetic properties of Gd-doped EuO films on YSZ (001)
• Prediction of a spin-polarized two-dimensional electron gas at the LaAlO3/EuO(001) interface
• Prediction of a surface state and a related surface insulator-metal transition for the (100) surface of stochiometric EuO
• Temperature-dependent bandstructure of bulk EuO

Cited by in corpus (5)

• Photoferroelectric oxides
• Electronic structure and magnetic properties of Gd-doped and Eu-rich EuO
• Effect of Gd doping and O deficiency on the Curie temperature of EuO
• Electronic Origin of Half-metal to Semiconductor Transition and Colossal Magnetoresistance in Spinel HgCr2Se4
• Observation of semi-localized dispersive states in the strongly correlated electron-doped ferromagnet Eu${}_{1-x}$Gd${}_x$O