Controllable suppression of the unconventional superconductivity in bulk and thin-film Sr$_{2}$RuO$_{4}$ via high-energy electron irradiation
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866911786555408384 |
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| author | Ruf, Jacob P. Noad, Hilary M. L. Grasset, Romain Miao, Ludi Zhakina, Elina McGuinness, Philippa H. Nair, Hari P. Schreiber, Nathaniel J. Kikugawa, Naoki Sokolov, Dmitry Konczykowski, Marcin Schlom, Darrell G. Shen, Kyle M. Mackenzie, Andrew P. |
| author_facet | Ruf, Jacob P. Noad, Hilary M. L. Grasset, Romain Miao, Ludi Zhakina, Elina McGuinness, Philippa H. Nair, Hari P. Schreiber, Nathaniel J. Kikugawa, Naoki Sokolov, Dmitry Konczykowski, Marcin Schlom, Darrell G. Shen, Kyle M. Mackenzie, Andrew P. |
| contents | In bulk Sr$_{2}$RuO$_{4}$, the strong sensitivity of the superconducting transition temperature $T_{\text{c}}$ to nonmagnetic impurities provides robust evidence for a superconducting order parameter that changes sign around the Fermi surface. In superconducting epitaxial thin-film Sr$_{2}$RuO$_{4}$, the relationship between $T_{\text{c}}$ and the residual resistivity $ρ_0$, which in bulk samples is taken to be a proxy for the low-temperature elastic scattering rate, is far less clear. Using high-energy electron irradiation to controllably introduce point disorder into bulk single-crystal and thin-film Sr$_{2}$RuO$_{4}$, we show that $T_{\text{c}}$ is suppressed in both systems at nearly identical rates. This suggests that part of $ρ_0$ in films comes from defects that do not contribute to superconducting pairbreaking, and establishes a quantitative link between the superconductivity of bulk and thin-film samples. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_19454 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Controllable suppression of the unconventional superconductivity in bulk and thin-film Sr$_{2}$RuO$_{4}$ via high-energy electron irradiation Ruf, Jacob P. Noad, Hilary M. L. Grasset, Romain Miao, Ludi Zhakina, Elina McGuinness, Philippa H. Nair, Hari P. Schreiber, Nathaniel J. Kikugawa, Naoki Sokolov, Dmitry Konczykowski, Marcin Schlom, Darrell G. Shen, Kyle M. Mackenzie, Andrew P. Superconductivity Materials Science In bulk Sr$_{2}$RuO$_{4}$, the strong sensitivity of the superconducting transition temperature $T_{\text{c}}$ to nonmagnetic impurities provides robust evidence for a superconducting order parameter that changes sign around the Fermi surface. In superconducting epitaxial thin-film Sr$_{2}$RuO$_{4}$, the relationship between $T_{\text{c}}$ and the residual resistivity $ρ_0$, which in bulk samples is taken to be a proxy for the low-temperature elastic scattering rate, is far less clear. Using high-energy electron irradiation to controllably introduce point disorder into bulk single-crystal and thin-film Sr$_{2}$RuO$_{4}$, we show that $T_{\text{c}}$ is suppressed in both systems at nearly identical rates. This suggests that part of $ρ_0$ in films comes from defects that do not contribute to superconducting pairbreaking, and establishes a quantitative link between the superconductivity of bulk and thin-film samples. |
| title | Controllable suppression of the unconventional superconductivity in bulk and thin-film Sr$_{2}$RuO$_{4}$ via high-energy electron irradiation |
| topic | Superconductivity Materials Science |
| url | https://arxiv.org/abs/2402.19454 |