The work investigated the effect of high hydrostatic pressure up to 12 kbar on the fluctuation conductivity of medium-doped praseodymium $(x\approx 0.23)$ single-crystal Y_1−xPr_xBa₂Cu₃O_7−δ samples. It was found that in contrast to the pure YBa₂Cu₃O_7−δ samples and the Y_0.95Pr_0.05Ba₂Cu₃O_7−δ samples lightly doped with praseodymium, the application of high pressure leads to a significant decrease in the transverse coherence length ξ_c and an increase in the baric derivative dT_c/dP. Possible mechanisms of the effect of high pressure on the critical temperature and coherence length in the bulk of the experimental sample are discussed.

中文翻译：

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均匀压缩对Y0.77Pr0.23Ba2Cu3O7−δ单晶波动顺导电性的影响

这项工作研究了高达12 kbar的高静水压力对中掺杂的波动电导率的影响 $(X\approx 0.23)$单晶 Y _{1− x} Pr _x Ba ₂ Cu ₃ O _7−δ样品。发现与纯 YBa ₂ Cu ₃ O _7-δ样品和轻掺杂镨的 Y _0.95 Pr _0.05 Ba ₂ Cu ₃ O _7-δ样品相比，高压的应用导致显着降低横向相干长度 ξ _c和重压导数dT _c / dP 的增加. 讨论了高压对大部分实验样品的临界温度和相干长度的影响的可能机制。