High-performance amorphous superconducting rhenium films by e-beam evaporation
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866918096965468160 |
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| author | Tarkaeva, E. V. Ievleva, V. A. Prishchepa, A. R. Zhukova, E. S. Terentiev, A. V. Kuntsevich, A. Yu. |
| author_facet | Tarkaeva, E. V. Ievleva, V. A. Prishchepa, A. R. Zhukova, E. S. Terentiev, A. V. Kuntsevich, A. Yu. |
| contents | We present electron beam evaporation of rhenium films on room-temperature substrates. The films are shown to be amorphous and achieve a record-high critical temperature for rhenium - exceeding 7 K at the midpoint of the transition - alongside a high critical current density of 5000 A/mm^2 and critical fields above 10 T. Terahertz spectroscopy reveals a BCS-like character of superconductivity with a zero-temperature energy gap of approximately 2 meV and subgap optical conductivity. Despite being friable, the films are stable and compatible with lift-off processes that opens the capabilities for superconducting device applications. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_13536 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-performance amorphous superconducting rhenium films by e-beam evaporation Tarkaeva, E. V. Ievleva, V. A. Prishchepa, A. R. Zhukova, E. S. Terentiev, A. V. Kuntsevich, A. Yu. Superconductivity Disordered Systems and Neural Networks We present electron beam evaporation of rhenium films on room-temperature substrates. The films are shown to be amorphous and achieve a record-high critical temperature for rhenium - exceeding 7 K at the midpoint of the transition - alongside a high critical current density of 5000 A/mm^2 and critical fields above 10 T. Terahertz spectroscopy reveals a BCS-like character of superconductivity with a zero-temperature energy gap of approximately 2 meV and subgap optical conductivity. Despite being friable, the films are stable and compatible with lift-off processes that opens the capabilities for superconducting device applications. |
| title | High-performance amorphous superconducting rhenium films by e-beam evaporation |
| topic | Superconductivity Disordered Systems and Neural Networks |
| url | https://arxiv.org/abs/2507.13536 |