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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2501.16278 |
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| _version_ | 1866915124123533312 |
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| author | Acha, C. Camjayi, A. Vaimala, T. Huhtinen, H. Paturi, P. |
| author_facet | Acha, C. Camjayi, A. Vaimala, T. Huhtinen, H. Paturi, P. |
| contents | We report on the characterization of Pt-YBa$_2$Cu$_3$O$_{7-δ}$ interfaces, focusing on how oxygen vacancies content ($δ$) affects electrical transport mechanisms. Our study examines four Pt-YBa$_2$Cu$_3$O$_{7-δ}$ samples with varying $δ$ (0.12 $\leq δ\leq$ 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 $δ$ 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$_{7-δ}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_16278 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Electric transport as a probe to unveil microscopic aspects of oxygen-depleted YBCO Acha, C. Camjayi, A. Vaimala, T. Huhtinen, H. Paturi, P. Disordered Systems and Neural Networks We report on the characterization of Pt-YBa$_2$Cu$_3$O$_{7-δ}$ interfaces, focusing on how oxygen vacancies content ($δ$) affects electrical transport mechanisms. Our study examines four Pt-YBa$_2$Cu$_3$O$_{7-δ}$ samples with varying $δ$ (0.12 $\leq δ\leq$ 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 $δ$ 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$_{7-δ}$. |
| title | Electric transport as a probe to unveil microscopic aspects of oxygen-depleted YBCO |
| topic | Disordered Systems and Neural Networks |
| url | https://arxiv.org/abs/2501.16278 |