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| Autori principali: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2503.13878 |
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| _version_ | 1866917959456260096 |
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| author | Lee, Jung-Woo Kim, Jieun Edgeton, Anthony L. Paudel, Tula R. Campbell, Neil Noesges, Brenton A. Schad, Jonathon L. Yang, Jiangfeng Wada, Katelyn Moreno-Ramirez, Jonathan Parker, Nicholas Gan, Yulin Lee, Hyungwoo Christensen, Dennis V. Eom, Kitae Kang, Jong-Hoon Chen, Yunzhong Tybell, Thomas Pryds, Nini Tenne, Dmitri A. Brillson, Leonard J. Rzchowski, Mark S. Tsymbal, Evgeny Y. Eom, Chang-Beom |
| author_facet | Lee, Jung-Woo Kim, Jieun Edgeton, Anthony L. Paudel, Tula R. Campbell, Neil Noesges, Brenton A. Schad, Jonathon L. Yang, Jiangfeng Wada, Katelyn Moreno-Ramirez, Jonathan Parker, Nicholas Gan, Yulin Lee, Hyungwoo Christensen, Dennis V. Eom, Kitae Kang, Jong-Hoon Chen, Yunzhong Tybell, Thomas Pryds, Nini Tenne, Dmitri A. Brillson, Leonard J. Rzchowski, Mark S. Tsymbal, Evgeny Y. Eom, Chang-Beom |
| contents | Point defects in complex oxide thin films play a critical role in determining material properties but remain challenging to control with precision. This study introduces metal-organic pulsed laser deposition (MOPLD) as a novel synthesis technique for the precise manipulation of these defects, using LaAlO3/SrTiO3 (LAO/STO) as a model system. By employing titanium tetraisopropoxide (TTIP) as the titanium precursor, MOPLD achieves refined stoichiometric control in STO layers while preserving their structural integrity, as confirmed by X-ray diffraction and Raman spectroscopy. Depth-resolved cathodoluminescence spectroscopy and density functional theory calculations reveal that increasing TTIP flux during STO growth enhances the [TiSr]/[VSr] ratio and reduces the [VO] concentration. These defect modifications lead to a significant improvement in the low-temperature mobility of the two-dimensional electron gas at the LAO/STO interface, evidenced by distinct Shubnikov-de Haas oscillations. This work underscores the potential of MOPLD to advance defect engineering in complex oxide heterostructures, opening new avenues for quantum material research. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_13878 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Metal-organic Pulsed Laser Deposition for Complex Oxide Heterostructures Lee, Jung-Woo Kim, Jieun Edgeton, Anthony L. Paudel, Tula R. Campbell, Neil Noesges, Brenton A. Schad, Jonathon L. Yang, Jiangfeng Wada, Katelyn Moreno-Ramirez, Jonathan Parker, Nicholas Gan, Yulin Lee, Hyungwoo Christensen, Dennis V. Eom, Kitae Kang, Jong-Hoon Chen, Yunzhong Tybell, Thomas Pryds, Nini Tenne, Dmitri A. Brillson, Leonard J. Rzchowski, Mark S. Tsymbal, Evgeny Y. Eom, Chang-Beom Materials Science Point defects in complex oxide thin films play a critical role in determining material properties but remain challenging to control with precision. This study introduces metal-organic pulsed laser deposition (MOPLD) as a novel synthesis technique for the precise manipulation of these defects, using LaAlO3/SrTiO3 (LAO/STO) as a model system. By employing titanium tetraisopropoxide (TTIP) as the titanium precursor, MOPLD achieves refined stoichiometric control in STO layers while preserving their structural integrity, as confirmed by X-ray diffraction and Raman spectroscopy. Depth-resolved cathodoluminescence spectroscopy and density functional theory calculations reveal that increasing TTIP flux during STO growth enhances the [TiSr]/[VSr] ratio and reduces the [VO] concentration. These defect modifications lead to a significant improvement in the low-temperature mobility of the two-dimensional electron gas at the LAO/STO interface, evidenced by distinct Shubnikov-de Haas oscillations. This work underscores the potential of MOPLD to advance defect engineering in complex oxide heterostructures, opening new avenues for quantum material research. |
| title | Metal-organic Pulsed Laser Deposition for Complex Oxide Heterostructures |
| topic | Materials Science |
| url | https://arxiv.org/abs/2503.13878 |