Pressure-induced charge transfer and hole depletion in (Nd1-xPrx)Ba2Cu3O7
Journal
Physica C: Superconductivity and its Applications
Journal Volume
340
Journal Issue
1
Pages
79-85
Date Issued
2000
Author(s)
Abstract
We have systematically studied the pressure (P) effects on the normal state resistivity and on the superconducting transition temperature Tc for the series of (Nd1-xPrx)Ba2Cu3O7. Our results show that the functions Tc(x) and dTc/dP(x) are not directly related to each other, suggesting that the factor controlling the x-dependent Tc in (Nd1-xPrx)Ba2Cu3O7 is not sensitive to pressure. However, we have found that the x dependency of dTc/dP is strongly correlated to the x dependency of the pressure effect on carrier concentration. We therefore attribute the origin of pressure-induced Tc variation in (Nd1-xPrx)Ba2Cu3O7 to a combined effect of pressure-induced charge transfer and pressure-induced hole depletion. © 2000 Elsevier Science B.V.
Type
journal article