Suppression of the superconducting gap and the spin-fluctuation gap of YBa2Cu3Oy (y=7.0 and 6.76) by Zn substitution as measured by Gd3+ electron-spin resonance
A. Jánossy, J. R. Cooper, L.-C. Brunel, A. Carrington
DOI 10.1103/PhysRevB.50.3442 · 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 local susceptibility around Zn atoms in Gd-doped YBa2(Cu0.97Zn0.03)3Oy has been measured by the electron-spin-resonance Knight shift of Gd3+ at 245 GHz. The magnitude and distribution of the shifts are compared with the corresponding data for compounds with no Zn. For both y=7.0 and 6.76 the full density of states (corresponding to the high-temperature normal state of the pure y=7.0 compound) is restored at the first-neighbor sites of Zn atoms irrespective of whether the material is superconducting or not. This shows that both the superconducting gap and the spin-fluctuation gap are locally suppressed by Zn substitution.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | unknown |
| YBa2(Cu0.97Zn0.03)3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 55 | Pressure not reported | unknown |
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 63 | Pressure not reported | unknown |
| YBa2(Cu0.97Zn0.03)3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10 | Pressure not reported | unknown |
Similar papers
Tunneling measurement of the energy gaps in the superconductors Y-Ba-Cu-O and Tl-Ba-Ca-Cu-O
similarity 0.96Wang Lanping et al.
Source status unknown — claims are unverified
Spin fluctuations and superconductivity in Ba2YCu3O6+δ
similarity 0.95K. B. Lyons et al.
Source status unknown — claims are unverified
Electron-tunneling studies on the superconducting (La1−xSrx)2CuO4 and YBa2Cu3Oy systems
similarity 0.95Toshikazu Ekino & Jun Akimitsu
Source status unknown — claims are unverified
Thermal conductivity and electrical resistivity of the Y- and Er-substituted 1:2:3 superconducting compounds in the vicinity of the transition temperature
similarity 0.95B. M. Suleiman et al.
Source status unknown — claims are unverified
Suppression of superconductivity by the nonmagnetic ions Zn and Al for the YBa2Cu3O7−δ system: From dopant clusters to carrier localization
similarity 0.95Pinglin Li et al.
Source status unknown — claims are unverified
Magnetotransport study of intra- and intergrain transitions in the magnetic superconductors RuSr2GdCu2O8 and RuSr2(Gd1.5Ce0.5)Cu2O10
similarity 0.95S. García et al.
Source status unknown — claims are unverified