Pressure dependence of $T_{c}$ to 17 GPa with and without relaxation effects in superconducting ${YBa}_{2} {Cu}_{3} O_{x}$

Authors:

1 January 2000

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 61 (1) , 741-749
DOI:10.1103/physrevb.61.741

Abstract

Hydrostatic high-pressure studies to 17 GPa were carried out on superconducting

{YBa}_{2} {Cu}_{3} O_{x}

over the full range of oxygen content x. The observed bell-shaped

T_{c} (P)

dependences are found to depend markedly on the temperature at which the pressure is changed. The time-dependent relaxation processes are studied using both

T_{c}

and the electrical resistivity at 298 K as probes. The activation volume for oxygen diffusion is determined from the pressure-dependent activation energy and compared with estimates from a simple hard-sphere model.

Keywords

This publication has 19 references indexed in Scilit:

Pressure dependence of Tc in strongly underdoped YBa2Cu3O6.41 as a function of pressure–temperature history
Physica C: Superconductivity and its Applications, 1999
Possibility for oxygen relaxation below 15 K in superconducting Tl2Ba2CuO6 + x
Physica C: Superconductivity and its Applications, 1997
Giant pressure effect in oxygen deficient YBa2Cu3Ox
Physica C: Superconductivity and its Applications, 1996
Pressure-induced oxygen ordering phenomena in high-T superconductors
Physica C: Superconductivity and its Applications, 1996
Dependence of the superconducting transition temperature of HgBa2CuO4+δ on hydrostatic pressure
Physica C: Superconductivity and its Applications, 1993
Correlation between the pressure-induced changes in the Hall coefficient and Tc in superconducting cuprates
Physica C: Superconductivity and its Applications, 1991
General trends in oxygen stoichiometry effects on Tc in Bi and Tl superconductors
Physica C: Superconductivity and its Applications, 1991
Marked anomalies in the pressure dependence of the superconducting transition temperature in Tl2Ba2CuO6+y as a function of oxygen content
Physica C: Superconductivity and its Applications, 1991
Structural properties of oxygen-deficient ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$
Physical Review B, 1990
The equation of state of solid helium: A pressure scale to 20 kbar for high pressure measurements at low temperature
Cryogenics, 1971

Pressure dependence of Tc to 17 GPa with and without relaxation effects in superconducting YBa2Cu3Ox

Abstract

Keywords

Pressure dependence of $T_{c}$ to 17 GPa with and without relaxation effects in superconducting ${YBa}_{2} {Cu}_{3} O_{x}$