Superconducting transition temperatures in the electronic and magnetic phase diagrams of Sr2VFeAsO3-delta, a superconductor
arXiv:1802.03907 · doi:10.1088/1361-648X/aaf7e0
Abstract
We elucidate the magnetic phases and superconducting transition temperatures (Tc) in Sr2VFeAsO3-delta (21113V), an iron-based superconductor with a thick-blocking layer fabricated from a perovskite-related transition metal oxide. At low temperatures (T < 37.1 K), 21113V exhibited a superconducting phase in the range 0.031 =< delta =< 0.145 and an antiferromagnetic (AFM) iron sublattice in the range 0.267 =< delta =< 0.664. Mixed-valent vanadium exhibited a dominant AFM phase in 0.031 =< delta =< 0.088, and a partial ferrimagnetic (Ferri.) phase in the range 0.124 =< delta =< 0.664. The Ferri. phase was the most dominant at a delta value of 0.267, showing an AFM phase of Fe at T < 20 K. Increasing the spontaneous magnetic moments reduced the magnetic shielding volume fraction due to the superconducting phase. This result was attributed to the magnetic phase of vanadium, which dominates the superconductivity of Fe in 21113V. The Tc-delta curve showed two maxima. The smaller and larger of Tc maxima occurred at delta = 0.073 and delta = 0.145, respectively; the latter resides on the phase boundary between AFM and the partial Ferri. phases of vanadium. 21113V is a useful platform for verifing new mechanisms of Tc enhancement in iron-based superconductors.
arXiv comment34 pages, 10 figures, 2 tables, supplement information with 11 pages, 8 figures, 3 tables. accepted for publication, J. Phys.: Condens. Matter, Updated manuscript contains More references and readability. See http://iopscience.iop.org/article/10.1088/1361-648X/aaf7e0
References in corpus (43)
- Unconventional sign-reversing superconductivity in LaFeAsO_(1-x)F_x
- Unconventional pairing originating from disconnected Fermi surfaces in superconducting LaFeAsOF}
- Superconductivity in Iron Compounds
- A Common Thread: the pairing interaction for the unconventional superconductors
- Spin density wave anomaly at 140 K in the ternary iron arsenide BaFe2As2
- Pnictogen height as a possible switch between high-T_c nodeless and low-T_c nodal pairings in the iron based superconductors
- Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO1-y (Ln=La,Nd)
- Iron-Based Superconductors: current status of materials and pairing mechanism
- Transition of stoichiometricSr2VO3FeAs to a superconducting state at 37.2 K
- Superconductivity at 17 K in (Fe2P2)(Sr4Sc2O6): a new superconducting layered pnictide oxide with a thick perovskite oxide layer
- Two-dome structure in electron-doped iron arsenide superconductors
- (Sr_3Sc_2O_5)Fe_2As_2 as a possible parent compound for FeAs-based superconductors
- Orbital Fluctuation Theory in Iron Pnictides: Effects of As-Fe-As Bond Angle, Isotope Substitution, and -Orbital Pocket on the Superconductivity
- Spin Ordering in LaOFeAs and Its Suppression in Superconductor LaO0.89F0.11FeAs Probed by Mössbauer Spectroscopy
- First Homologous Series of Iron Pnictide Oxide Superconductors (Fe2As2)(Can+1(Sc,Ti)nOy) [n = 3,4,5] with Extremely Thick Blocking Layers
- Electronic and Magnetic Phase Diagram of a Superconductor, SmFeAsO1-xFx
- Enhancing Superconductivity by Disorder
- Coexistence of incommensurate magnetism and superconductivity in the two-dimensional Hubbard model
- Superconductivity at 28.3 and 17.1 K in (Ca4Al2O6-y)(Fe2Pn2) (Pn = As and P)
- Second Homologous Series of Iron Pnictide Oxide Superconductors (Fe2As2)(Can+2(Al,Ti)nOy)[n = 2,3,4]
- Self doping effect and successive magnetic transitions in superconducting SrVFeAsO
- Shape of spin density wave versus temperature in AFe2As2 (A=Ca, Ba, Eu): A Mössbauer study
- Superconductivity at 39 K in New Iron Pnictide Oxide (Fe2As2)(Sr4(Mg,Ti)2O6)
- Superconductivity in New Iron Pnictide Oxide (Fe2As2)(Sr4(Mg,Ti)2O6)
- SrVOFeAs as Compared to Other Fe-based Superconductors
- Possible high temperature superconductivity in Ti-doped A-Sc-Fe-As-O (A= Ca, Sr) system
- Contrasting Pressure Effects in Sr2VFeAsO3 and Sr2ScFePO3
- SrVOFeAs: A Nanolayered Bimetallic Iron Pnictide Superconductor
- The layered iron arsenides Sr2CrO3FeAs and Ba2ScO3FeAs
- Magnetic Ordering in Blocking Layer and Highly Anisotropic Electronic Structure of High-Tc Iron-based Superconductor Sr2VFeAsO3: LDA+U Studies
- Switching Magnetism and Superconductivity with Spin-Polarized Current in Iron-Based Superconductor
- Non-stoichiometry and the magnetic structure of Sr2CrO3FeAs
- Suppression of superconductivity by V-doping and possible magnetic order in Sr2VO3FeAs
- Structure and Physical properties of New layered oxypnictides (M=Fe and Co)
- Structural and transport properties of Sr2VO{3-delta}FeAs superconductors with different oxygen deficiencies
- Raising the critical temperature by disorder in unconventional superconductors mediated by spin fluctuations
- Magnetic Ordering in V-Layers of the Superconducting System of Sr2VFeAsO3
- Static magnetic order of SrAOFeAs (A = Sc and V) revealed by local probes
- Magnetism and superconductivity in SrVFeAsO revealed by As- and V-NMR under elevated pressures
- Weak magnetism and the Mott-state of vanadium in superconducting Sr2VO3FeAs
- Superconductivity in Ti-doped Iron-Arsenide Compound Sr4Cr0.8Ti1.2O6Fe2As2
- Magnetic and electrical properties and carrier doping effects on the Fe-based host compound Sr4Sc2Fe2As2O6
- Local Magnetic States of the Weakly Ferromagnetic Iron-Based Superconductor SrVFeAsO Studied by X-ray Magnetic Circular Dichroism