Effect of hydrostatic pressure up to 12 kbar on the electrical resistance of Y0.77Pr0.23Ba2Cu3O7

The effect of high hydrostatic pressure up to 12 kbar on the electrical resistivity in the basal ab planeof an optimally doped Y_0.77Pr_0.23Ba₂Cu₃O_7–δ single crystal were studied. An inhomogeneity of the sample is found that does not depend on the applied pressure, P. The T_c(P) dependence increases nonlinearly with increasing P, and the value of the baric derivative, dT_c / dP, decreases. Possible mechanisms of the effect of high pressure on T_c are discussed, taking into account the presence of features in the electronic spectrum of charge carriers.

Key words: Y_1–xPr_xBa₂Cu₃O_7–δ single crystals, doping with praseodymium, hydrostatic pressure, phase separation, baric derivatives.

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Effect of hydrostatic pressure up to 12 kbar on the electrical resistance of Y0.77Pr0.23Ba2Cu3O7–δ single crystals

Effect of hydrostatic pressure up to 12 kbar on the electrical resistance of Y_0.77Pr_0.23Ba₂Cu₃O_7–δ single crystals