| Autor: |
Broyles, Christopher, Rehfuss, Zack, Siddiquee, Hasan, Zheng, Kaiwen, Le, Yiwei, Nikolo, Martin, Graf, David, Singleton, John, Ran, Sheng |
| Rok vydání: |
2023 |
| Předmět: |
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| DOI: |
10.48550/arxiv.2303.09050 |
| Popis: |
Spin triplet superconductor UTe$_{2}$ is widely believed to host a quasi-two-dimensional Fermi surface, revealed by first principal calculations, photoemission and quantum oscillation measurements. An outstanding question still remains as to the existence of a three-dimensional Fermi surface pocket, which is crucial for our understanding of the exotic superconducting and topological properties of UTe$_{2}$. This 3D Fermi surface pocket appears in various theoretical models with different physics origins but has not been detected experimentally. Here for the first time, we provide concrete evidence for a relatively isotropic, small Fermi surface pocket of UTe$_{2}$ via quantum oscillation measurements. In addition, we observed high frequency quantum oscillations corresponding to electron-hole tunneling between adjacent electron and hole pockets. The coexistence of 2D and 3D Fermi surface pockets, as well as the breakdown orbits, provides a test bed for theoretical models and aid the realization of a unified understanding of superconducting state of UTe$_{2}$ from the first-principles approach. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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