A possible superconducting gap signature with filling temperature around 40 K in hexagonal iron telluride islands
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866918403668705280 |
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| author | He, Guanyang Lei, Yuxuan Wei, Tianheng Liu, Yanzhao Wang, Jian |
| author_facet | He, Guanyang Lei, Yuxuan Wei, Tianheng Liu, Yanzhao Wang, Jian |
| contents | Superconductivity in the iron-chalcogenide series FeSe-Fe(Te, Se)-FeTe has been restricted to the near neighbor of iron selenide (FeSe), with a general consensus that iron telluride (FeTe) is not superconducting. In this study, we report the method to grow FeTe islands with atomically flat surface and hexagonal lattice on SrTiO3 (001) substrates, in which a gap structure with a gap-filling temperature close to 40 K is detected by scanning tunneling spectroscopy. Such signature is examined under various conditions and reminiscent of a superconducting gap structure. This work might offer a potential platform to explore new superconductors at ambient pressure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_21959 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A possible superconducting gap signature with filling temperature around 40 K in hexagonal iron telluride islands He, Guanyang Lei, Yuxuan Wei, Tianheng Liu, Yanzhao Wang, Jian Superconductivity Mesoscale and Nanoscale Physics Materials Science Superconductivity in the iron-chalcogenide series FeSe-Fe(Te, Se)-FeTe has been restricted to the near neighbor of iron selenide (FeSe), with a general consensus that iron telluride (FeTe) is not superconducting. In this study, we report the method to grow FeTe islands with atomically flat surface and hexagonal lattice on SrTiO3 (001) substrates, in which a gap structure with a gap-filling temperature close to 40 K is detected by scanning tunneling spectroscopy. Such signature is examined under various conditions and reminiscent of a superconducting gap structure. This work might offer a potential platform to explore new superconductors at ambient pressure. |
| title | A possible superconducting gap signature with filling temperature around 40 K in hexagonal iron telluride islands |
| topic | Superconductivity Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2603.21959 |