标题： 电输运作为揭示氧缺位YBCO微观特性的探针 显示英文标题

标题： Electric transport as a probe to unveil microscopic aspects of oxygen-depleted YBCO

摘要： 我们报告了Pt-YBa$_2$Cu$_3$O$_{7-\delta}$界面的表征，重点在于氧空位含量（$\delta$）如何影响电荷传输机制。 我们的研究检查了四种Pt-YBa$_2$Cu$_3$O$_{7-\delta}$样品，其$\delta$(0.12 $\leq \delta \leq$ 0.56)不同，使用电压-电流测量在温度范围内进行。 我们成功地使用Poole-Frenkel传导框架对电行为进行了建模，揭示出氧空位产生势阱，捕获载流子，直接影响传导。 我们观察到这些陷阱的能量随着$\delta$上升而增加，这与之前在光学电导率测量中检测到的峰值一致。 这一结果支持了早期的解释，加强了氧空位与YBa$_2$Cu$_3$O$_{7-\delta}$中杂质带相关的电离能之间的假设联系。 显示英文摘要

摘要： We report on the characterization of Pt-YBa$_2$Cu$_3$O$_{7-\delta}$ interfaces, focusing on how oxygen vacancies content ($\delta$) affects electrical transport mechanisms. Our study examines four Pt-YBa$_2$Cu$_3$O$_{7-\delta}$ samples with varying $\delta$ (0.12 $\leq \delta \leq$ 0.56) using voltage-current measurements across a temperature range. We successfully model the electrical behavior using a Poole-Frenkel conduction framework, revealing that oxygen vacancies create potential wells that trap carriers, directly influencing conduction. We observe that the energy of these traps increases as $\delta$ rises, in agreement with a peak previously detected in optical conductivity measurements. This result supports earlier interpretations, strengthening the proposed connection between oxygen vacancies and the ionization energy associated with impurity bands in YBa$_2$Cu$_3$O$_{7-\delta}$.