Superconductivity of barium-VI synthesized via compression at low temperatures
D. E. Jackson, D. VanGennep, Y. K. Vohra, S. T. Weir, J. J. Hamlin
DOI 10.1103/PhysRevB.96.184514 · 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
Using a membrane-driven diamond anvil cell and both ac magnetic susceptibility and electrical resistivity measurements, we have characterized the superconducting phase diagram of elemental barium to pressures as high as 65 GPa. We have determined the superconducting properties of the recently discovered Ba-VI crystal structure, which can only be accessed via the application of pressure at low temperature. We find that Ba-VI exhibits a maximum Tc near 8 K, which is substantially higher than the maximum Tc found when pressure is applied at room temperature. We discuss our results in terms of the implications for pressure-induced superconductivity in other elements exhibiting complex/modulated structures at high pressure. Finally, we highlight the potential of cryogenic compression to reveal additional richness in previously explored high-pressure phase diagrams.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8 | 30 GPa | onset |
| Ba Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8 | 30 GPa | midpoint |
| Ba Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5 | 18 GPa | unknown |
| Ca Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 29 | 200 GPa | unknown |
Similar papers
Structures and superconducting properties of the high-pressure IV and V phases of calcium from first principles
similarity 0.92Yansun Yao et al.
Source status unknown — claims are unverified
Superconducting state of Ca-VII below a critical temperature of 29 K at a pressure of 216 GPa
similarity 0.92Masafumi Sakata et al.
Source status unknown — claims are unverified
Superconductivity of Bi-III phase of elemental bismuth: Insights from muon-spin rotation and density functional theory
similarity 0.92Rustem Khasanov et al.
Source status unknown — claims are unverified
Superconductivity up to 37.6 K in compressed scandium
similarity 0.92Kui Wang et al.
Source status unknown — claims are unverified
Pressure-Induced Superconductivity in CaLi2
similarity 0.92T. Matsuoka et al.
Source status unknown — claims are unverified
Superconductivity of barium-VI synthesized via compression at low temperatures
similarity 0.92D. E. Jackson et al. · 2017 · arXiv:1707.05860
Source status unknown — claims are unverified