Proximity-Induced Superconductivity in Atomically Precise Nanographene
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arXiv
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| Auteurs principaux: | , , , , , , , , , , |
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| Format: | Preprint |
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2022
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| _version_ | 1866916767891193856 |
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| author | Liu, Jung-Ching Pawlak, Rémy Wang, Xing D'Astolfo, Philipp Drechsel, Carl Zhou, Ping Decurtins, Silvio Aschauer, Ulrich Liu, Shi-Xia Wulfhekel, Wulf Meyer, Ernst |
| author_facet | Liu, Jung-Ching Pawlak, Rémy Wang, Xing D'Astolfo, Philipp Drechsel, Carl Zhou, Ping Decurtins, Silvio Aschauer, Ulrich Liu, Shi-Xia Wulfhekel, Wulf Meyer, Ernst |
| contents | Obtaining a robust superconducting state in atomically precise nanographene (NG) structures by proximity to a superconductor could foster the discovery of topological superconductivity in graphene. On-surface synthesis of such NGs has been achieved on noble metals or metal oxides, however, it is still absent on superconductors. Here, we present a synthetic method to induce superconductivity to polymeric chains and NGs adsorbed on the superconducting Nb(110) substrate covered by thin Ag films. Using atomic force microscopy at low-temperature, we characterize the chemical structure of each sub-product formed on the superconducting Ag layer. Scanning tunneling spectroscopy further allows us to elucidate electronic properties of these nanostructures, which consistently show a superconducting gap. We foresee our approach to become a promising platform for exploring the interplay between carbon magnetism and superconductivity at the fundamental level. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2202_00460 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Proximity-Induced Superconductivity in Atomically Precise Nanographene Liu, Jung-Ching Pawlak, Rémy Wang, Xing D'Astolfo, Philipp Drechsel, Carl Zhou, Ping Decurtins, Silvio Aschauer, Ulrich Liu, Shi-Xia Wulfhekel, Wulf Meyer, Ernst Superconductivity Materials Science Obtaining a robust superconducting state in atomically precise nanographene (NG) structures by proximity to a superconductor could foster the discovery of topological superconductivity in graphene. On-surface synthesis of such NGs has been achieved on noble metals or metal oxides, however, it is still absent on superconductors. Here, we present a synthetic method to induce superconductivity to polymeric chains and NGs adsorbed on the superconducting Nb(110) substrate covered by thin Ag films. Using atomic force microscopy at low-temperature, we characterize the chemical structure of each sub-product formed on the superconducting Ag layer. Scanning tunneling spectroscopy further allows us to elucidate electronic properties of these nanostructures, which consistently show a superconducting gap. We foresee our approach to become a promising platform for exploring the interplay between carbon magnetism and superconductivity at the fundamental level. |
| title | Proximity-Induced Superconductivity in Atomically Precise Nanographene |
| topic | Superconductivity Materials Science |
| url | https://arxiv.org/abs/2202.00460 |