Transition of stoichiometric Sr2VO3FeAs to a superconducting state at 37.2 K
Xiyu Zhu, Fei Han, Gang Mu, Peng Cheng, Bing Shen, Bin Zeng, Hai-Hu Wen
DOI 10.1103/PhysRevB.79.220512 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The superconductor Sr4V2O6Fe2As2 with transition temperature at 37.2 K was successfully fabricated. It has a layered structure with the space group of p4/nmm and with the lattice constants a=3.9296 Å and c=15.6732 Å. The observed large diamagnetization signal and zero resistance demonstrated the bulk superconductivity. The broadening of resistive transition was measured under different magnetic fields revealing a rather high upper critical field. The results also suggest a large vortex liquid region that reflects high anisotropy of the system. The Hall-effect measurements revealed dominantly electronlike charge carriers in this material. The superconductivity in the present system may be induced by oxygen deficiency or the multiple valence states of vanadium.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr4V2O6Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 37.2 | Pressure unresolved | onset |
| Sr4V2O6Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 31 | Pressure unresolved | zero_resistance |
| Sr4V2O6Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 31.5 | Pressure unresolved | onset |
| LaFeAsO1-xFx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26 | Pressure not reported | unknown |
| LaFePO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.75 | Pressure not reported | unknown |
| Sr4Sc2O6Fe2P2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 17 | Pressure not reported | unknown |
Similar papers
Superconductivity in SrNi2As2 single crystals
similarity 0.96E. D. Bauer et al.
Source status unknown — claims are unverified
Possible magnetic order and suppression of superconductivity by V doping in Sr2VO3FeAs
similarity 0.96Marcus Tegel et al.
Source status unknown — claims are unverified
Synthesis, structural, and transport properties of the hole-doped superconductor Pr1−xSrxFeAsO
similarity 0.96Gang Mu et al.
Source status unknown — claims are unverified
Superconductivity at 23 K and low anisotropy in Rb-substituted BaFe2As2 single crystals
similarity 0.95Z. Bukowski et al.
Source status unknown — claims are unverified
Superconductivity at 38 K in the Iron Arsenide (Ba1−xKx)Fe2As2
similarity 0.95Marianne Rotter et al.
Source status unknown — claims are unverified
Superconductivity above 50 K in Tb1−xThxFeAsO
similarity 0.95Lin-Jun Li et al.
Source status unknown — claims are unverified