Unusually large Tc enhancement in superconducting PrBa2Cu3Ox under pressure
Jinhua Ye, Zhigang Zou, Akiyuki Matsushita, Kunihiko Oka, Yoshikazu Nishihara, Takehiko Matsumoto
DOI 10.1103/PhysRevB.58.R619 · 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
Pressure effects on Tc of superconducting PrBa2Cu3Ox were investigated by electrical-resistance measurements under hydrostatic pressure up to 10 GPa, using single crystals with different oxygen contents. Large positive-pressure coefficients of Tc, dTc/dP, with a maximum of +7.4 K/GPa, have been observed. The zero-resistance Tc was enhanced to 105 K at a pressure of 9.3 GPa, and still keeps positive value of dTc/dP. The maximum Tc increase was as large as 50 K. The unusually large Tc enhancement far exceeds that observed for the isostructural YBa2Cu3Ox compounds, while x-ray diffraction under high pressure indicates that the compressibility of PrBa2Cu3Ox is about 6.9×10−3 GPa−1, a value comparable to that of YBa2Cu3Ox.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| PrBa2Cu3O6.6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 56.5 | Pressure unresolved | zero_resistance |
| PrBa2Cu3O6.8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 81 | Pressure unresolved | zero_resistance |
| PrBa2Cu3O6.6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 105 | 9.3 GPa | zero_resistance |
| PrBa2Cu3O6.6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 109 | 9.3 GPa | onset |
| PrBa2Cu3O6.8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 102 | 9.7 GPa | zero_resistance |
| PrBa2Cu3O6.8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 106 | 9.7 GPa | onset |
| YBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | unknown |
Similar papers
Hydrostatic-pressure-induced phase separation in the YBa2Cu4O8 superconductor
similarity 0.96D. Lampakis et al.
Source status unknown — claims are unverified
High-pressure oxidation of the tetragonal La1.5−xBa1.5+x−yCayCu3Oz superconductors
similarity 0.96J. M. S. Skakle et al.
Source status unknown — claims are unverified
Enhancement of the Critical Current Density of YBa2Cu3Ox Superconductors under Hydrostatic Pressure
similarity 0.96T. Tomita et al.
Source status unknown — claims are unverified
Pressure dependence of Tc to 17 GPa with and without relaxation effects in superconducting YBa2Cu3Ox
similarity 0.96S. Sadewasser et al.
Source status unknown — claims are unverified
Effect of oxygen pressure on the orthorhombic-tetragonal transition in the high-temperature superconductor YBa2Cu3Ox
similarity 0.95E. D. Specht et al.
Source status unknown — claims are unverified
Metallization and superconducting properties of YBa2Cu3O6.2Bry
similarity 0.95H. B. Radousky et al.
Source status unknown — claims are unverified