Superconducting vacancy-ordered rock-salt NbO films
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912385378287616 |
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| author | Kim, Jeong Rae Glotzer, Sandra Krysko, Evan Barone, Matthew R. Kim, Jinkwon Salmani-Rezaie, Salva Llanos, Adrian Falson, Joseph |
| author_facet | Kim, Jeong Rae Glotzer, Sandra Krysko, Evan Barone, Matthew R. Kim, Jinkwon Salmani-Rezaie, Salva Llanos, Adrian Falson, Joseph |
| contents | We report molecular beam epitaxy synthesis of vacancy-ordered rocksalt NbO thin films which display superconductivity. A comparative study of substrates identifies Al$_2$O$_3$ (0001) as the optimal platform for realizing high-quality, single-phase films when growing at temperatures exceeding 1000 $^\circ$C. The controlled NbO films exhibit superconductivity with critical temperatures up to $T_\mathrm{c}$ = 1.37 K, comparable to bulk single crystals. This work addresses the fundamental bottlenecks encountered in the high-temperature epitaxy of compounds with uncommon oxidation states, while expanding the scope of available thin-film superconductors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_14997 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Superconducting vacancy-ordered rock-salt NbO films Kim, Jeong Rae Glotzer, Sandra Krysko, Evan Barone, Matthew R. Kim, Jinkwon Salmani-Rezaie, Salva Llanos, Adrian Falson, Joseph Superconductivity We report molecular beam epitaxy synthesis of vacancy-ordered rocksalt NbO thin films which display superconductivity. A comparative study of substrates identifies Al$_2$O$_3$ (0001) as the optimal platform for realizing high-quality, single-phase films when growing at temperatures exceeding 1000 $^\circ$C. The controlled NbO films exhibit superconductivity with critical temperatures up to $T_\mathrm{c}$ = 1.37 K, comparable to bulk single crystals. This work addresses the fundamental bottlenecks encountered in the high-temperature epitaxy of compounds with uncommon oxidation states, while expanding the scope of available thin-film superconductors. |
| title | Superconducting vacancy-ordered rock-salt NbO films |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2505.14997 |