Point-contact Andreev reflection spectroscopy of layered superconductors with device-integrated diamond anvil cells
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2025
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866912665125781504 |
|---|---|
| author | Ku, Che-hsuan Atanov, Omargeldi Yip, King Yau Wang, Wenyan Lam, Siu Tung Zeng, Jiayu Zhang, Wei Wang, Zheyu Wang, Lingfei Poon, Tsz Fung Lortz, Rolf Goh, Swee K. |
| author_facet | Ku, Che-hsuan Atanov, Omargeldi Yip, King Yau Wang, Wenyan Lam, Siu Tung Zeng, Jiayu Zhang, Wei Wang, Zheyu Wang, Lingfei Poon, Tsz Fung Lortz, Rolf Goh, Swee K. |
| contents | Superconductors that can be mechanically exfoliated are an interesting platform for exploring superconducting properties tuned by layer thickness. These layered superconductors are also expected to exhibit sensitivity to applied pressure. While pressure has been demonstrated to be an effective way of tuning bulk superconductors, analogous studies on superconducting thin flakes have been limited due to technical challenges. In particular, spectroscopic measurements under pressure remain insufficiently explored. In this work, we functionalized the diamond anvil cell technique for point-contact Andreev reflection spectroscopy (PCAR) measurement on thin-flake materials under pressure, offering the opportunity to obtain spectroscopic information on superconductivity. To validate the feasibility of this method, we have conducted PCAR measurements on iron-selenide thin flakes to extract temperature-dependent superconducting gap values under ambient and high pressure. Combine with the proven magnetotransport capability, our method provides a conceptually simple tool for a detailed examination of thin-flake superconductors under pressure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_19736 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Point-contact Andreev reflection spectroscopy of layered superconductors with device-integrated diamond anvil cells Ku, Che-hsuan Atanov, Omargeldi Yip, King Yau Wang, Wenyan Lam, Siu Tung Zeng, Jiayu Zhang, Wei Wang, Zheyu Wang, Lingfei Poon, Tsz Fung Lortz, Rolf Goh, Swee K. Superconductivity Strongly Correlated Electrons Superconductors that can be mechanically exfoliated are an interesting platform for exploring superconducting properties tuned by layer thickness. These layered superconductors are also expected to exhibit sensitivity to applied pressure. While pressure has been demonstrated to be an effective way of tuning bulk superconductors, analogous studies on superconducting thin flakes have been limited due to technical challenges. In particular, spectroscopic measurements under pressure remain insufficiently explored. In this work, we functionalized the diamond anvil cell technique for point-contact Andreev reflection spectroscopy (PCAR) measurement on thin-flake materials under pressure, offering the opportunity to obtain spectroscopic information on superconductivity. To validate the feasibility of this method, we have conducted PCAR measurements on iron-selenide thin flakes to extract temperature-dependent superconducting gap values under ambient and high pressure. Combine with the proven magnetotransport capability, our method provides a conceptually simple tool for a detailed examination of thin-flake superconductors under pressure. |
| title | Point-contact Andreev reflection spectroscopy of layered superconductors with device-integrated diamond anvil cells |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2510.19736 |