Transition of stoichiometric Sr2VO3FeAs to a superconducting state at 37.2 K
By Xiyu Zhu, F. Han, G. Mu, P. Cheng, B. Shen, B. Zeng, H. Wen. 2009
237 citations recorded by the source corpus.
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 A degrees and c=15.6732 A degrees. 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.
Subfields: Accounting, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/1d5168e98902032b5c6639e2580b4fc0b4be105f
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In Accounting
In Condensed Matter Physics
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Superconductivity in iron compounds (2011, background): “Measurements (Sefat et al., 2010) up to 10 T in Sr2VO3FeAs, Tc 33 K, give a value of dHc2=dTjTc ¼ 9 T=K.”