Exploring van der Waals Cuprate Superconductors Using a Hybrid Microwave Circuit
The advent of two-dimensional van der Waals materials is a frontier of condensed matter physics and quantum devices. However, characterizing such materials remains challenging due to the limitations of bulk material techniques, necessitating the development of specialized methods. Here, we investigate the superconducting properties of Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8+<i>x</i></sub> flakes by integrating them with a hybrid superconducting microwave resonator. The hybrid resonator is significantly modified by the interaction with the flake while maintaining a high quality factor (3 × 10<sup>4</sup>). We also observe a significant upshift of the resonator frequency with increasing temperature, as well as a positive nonlinearity. These effects originate from a presently unknown microscopic mechanism within the flake, and can be modeled as a two-level system bath interacting with the resonant mode. Our findings open a path for high quality hybrid circuits with van der Waals flakes for exploring novel materials and developing new devices for quantum technology.
Authors
- Kornelius Nielsch (ORCID: https://orcid.org/0000-0003-2271-7726)
- Genda Gu (ORCID: https://orcid.org/0000-0002-9886-3255)
- Uri Vool (ORCID: https://orcid.org/0000-0001-6024-8241)
- Edouard Lesne (ORCID: https://orcid.org/0000-0002-3964-9128)
- Nicola Poccia (ORCID: https://orcid.org/0000-0001-7982-0113)
- Domenico Montemurro (ORCID: https://orcid.org/0000-0001-8944-0640)
- Tommaso Confalone (ORCID: https://orcid.org/0009-0008-7453-6007)
- Berit Hansen Goodge (ORCID: https://orcid.org/0000-0003-0948-7698)
- Christian N. Saggau (ORCID: https://orcid.org/0000-0002-1289-2822)
- Giuseppe Serpico (ORCID: https://orcid.org/0009-0000-8962-7878)
- Yejin Lee (ORCID: https://orcid.org/0000-0002-9157-7766)
- Haolin Jin
- Flavia Lo Sardo (ORCID: https://orcid.org/0009-0001-4196-6384)
Institutions
- Brookhaven National Laboratory (US)
- Leibniz Institute for Solid State and Materials Research (DE)
- Photonics (United States) (US)
- Max Planck Institute for Chemical Physics of Solids (DE)
- Yukhnovskii Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine (UA)
- Institute of Solid State Physics (CN)
- University of Naples Federico II (IT)
- Technische Universität Dresden (DE)
- Technical University of Denmark (DK)
Publication Details
- Journal
- Nano Letters
- Published
- 2025-01-27
- DOI
- https://doi.org/10.1021/acs.nanolett.4c05793
- Citations
- 1
- Primary Topic
- Physics of Superconductivity and Magnetism
- Type
- article
- Field-Weighted Citation Impact
- 1.26
Funders
- U.S. Department of Energy
- European Commission
- Deutsche Forschungsgemeinschaft
- Max-Planck-Gesellschaft
- European Research Council
- Basic Energy Sciences