Magnetic Ordering in Blocking Layer and Highly Anisotropic Electronic Structure of High-Tc Iron-based Superconductor Sr2VFeAsO3: LDA+U Studies

Abstract

We calculate electronic structures of a high-Tc iron-based superconductor Sr2VFeAsO3 by LDA+U method. We assume a checker-board antiferromagnetic order on blocking layers including vanadium and strong correlation in d-orbits of vanadium through the Hubbard U. While the standard LDA brings about metallic blocking layers and complicated Fermi surface as in the previous literatures, our calculation changes the blocking layer into insulating one and the Fermi surface becomes quite similar to those of other iron-based superconductors. Moreover, the appearance of the insulating blocking layers predicts high anisotropy on quasi-particle transports and new types of intrinsic Josephson effects.

4 pages, 3 figures.

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Cited by in corpus (13)

• Intrinsic Josephson junctions in the iron-based multi-band superconductor (V2Sr4O6)Fe2As2
• Correlation of Fe-based Superconductivity and Electron-Phonon Coupling in an FeAs/Oxide Heterostructure
• Switching Magnetism and Superconductivity with Spin-Polarized Current in Iron-Based Superconductor
• Magnetic Ordering in V-Layers of the Superconducting System of Sr2VFeAsO3
• Weak magnetism and the Mott-state of vanadium in superconducting Sr2VO3FeAs
• Pressure Dependence of Superconducting Transition Temperature on Perovskite-Type Fe-Based Superconductors and NMR Study of Sr2VFeAsO3
• Superconducting transition temperatures in the electronic and magnetic phase diagrams of Sr2VFeAsO3-delta, a superconductor
• Variety of c-axis collective excitations in layered multigap superconductors
• Successive transition from superconducting to antiferromagnetic phase in (Ca_6(Al, Ti)_4O_y)Fe_2As_2 studied via ^{75}As and ^{27}Al NMR
• Coupled Magnetic and Superconducting Transitions in Sr${}_2$VO${}_3$FeAs Under Pressure
• Local Magnetic States of the Weakly Ferromagnetic Iron-Based Superconductor Sr${}_2$VFeAsO${}_{3-\delta }$ Studied by X-ray Magnetic Circular Dichroism
• Proximity-induced hidden order transition in a correlated heterostructure Sr${}_2$VO${}_3$FeAs
• Role of Vanadium-Oxide Layer in Electronic State of Sr${}_2$VFeAsO${}_{3-\delta }$ with Oxygen Deficiency