Measuring kinetic inductance and superfluid stiffness of two-dimensional superconductors using high-quality transmission-line resonators
The discovery of van der Waals superconductors in recent years has generated a lot of excitement for their potentially novel pairing mechanisms. However, their typical atomic-scale thickness and micrometer-scale lateral dimensions impose severe challenges to investigations of pairing symmetry by con...
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| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2024-12-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.6.043245 |
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| _version_ | 1850174345301721088 |
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| author | Mary Kreidel Xuanjing Chu Jesse Balgley Abhinandan Antony Nishchhal Verma Julian Ingham Leonardo Ranzani Raquel Queiroz Robert M. Westervelt James Hone Kin Chung Fong |
| author_facet | Mary Kreidel Xuanjing Chu Jesse Balgley Abhinandan Antony Nishchhal Verma Julian Ingham Leonardo Ranzani Raquel Queiroz Robert M. Westervelt James Hone Kin Chung Fong |
| author_sort | Mary Kreidel |
| collection | DOAJ |
| description | The discovery of van der Waals superconductors in recent years has generated a lot of excitement for their potentially novel pairing mechanisms. However, their typical atomic-scale thickness and micrometer-scale lateral dimensions impose severe challenges to investigations of pairing symmetry by conventional methods. We demonstrate an improved technique that employs high-quality-factor superconducting resonators to measure the kinetic inductance—up to one part per million—and loss of a van der Waals superconductor. We analyze the equivalent circuit model to extract the kinetic inductance, superfluid stiffness, penetration depth, and ratio of imaginary and real parts of the complex conductivity. We validate the technique by measuring aluminum and finding excellent agreement in both the zero-temperature superconducting gap as well as the complex conductivity data when compared with BCS theory. We then demonstrate the utility of the technique by measuring the kinetic inductance of multilayered niobium diselenide and discuss the limits to the accuracy of our technique when the transition temperature of the sample, NbSe_{2} at 7.06 K, approaches our Nb probe resonator at 8.59 K. Our method will be useful for practitioners in the growing fields of superconducting physics, materials science, and quantum sensing, as a means of characterizing superconducting circuit components and studying pairing mechanisms of the novel superconducting states which arise in layered two-dimensional materials and heterostructures. |
| format | Article |
| id | doaj-art-2f809d5ef8cf40a0847b4e76fbebf101 |
| institution | OA Journals |
| issn | 2643-1564 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-2f809d5ef8cf40a0847b4e76fbebf1012025-08-20T02:19:40ZengAmerican Physical SocietyPhysical Review Research2643-15642024-12-016404324510.1103/PhysRevResearch.6.043245Measuring kinetic inductance and superfluid stiffness of two-dimensional superconductors using high-quality transmission-line resonatorsMary KreidelXuanjing ChuJesse BalgleyAbhinandan AntonyNishchhal VermaJulian InghamLeonardo RanzaniRaquel QueirozRobert M. WesterveltJames HoneKin Chung FongThe discovery of van der Waals superconductors in recent years has generated a lot of excitement for their potentially novel pairing mechanisms. However, their typical atomic-scale thickness and micrometer-scale lateral dimensions impose severe challenges to investigations of pairing symmetry by conventional methods. We demonstrate an improved technique that employs high-quality-factor superconducting resonators to measure the kinetic inductance—up to one part per million—and loss of a van der Waals superconductor. We analyze the equivalent circuit model to extract the kinetic inductance, superfluid stiffness, penetration depth, and ratio of imaginary and real parts of the complex conductivity. We validate the technique by measuring aluminum and finding excellent agreement in both the zero-temperature superconducting gap as well as the complex conductivity data when compared with BCS theory. We then demonstrate the utility of the technique by measuring the kinetic inductance of multilayered niobium diselenide and discuss the limits to the accuracy of our technique when the transition temperature of the sample, NbSe_{2} at 7.06 K, approaches our Nb probe resonator at 8.59 K. Our method will be useful for practitioners in the growing fields of superconducting physics, materials science, and quantum sensing, as a means of characterizing superconducting circuit components and studying pairing mechanisms of the novel superconducting states which arise in layered two-dimensional materials and heterostructures.http://doi.org/10.1103/PhysRevResearch.6.043245 |
| spellingShingle | Mary Kreidel Xuanjing Chu Jesse Balgley Abhinandan Antony Nishchhal Verma Julian Ingham Leonardo Ranzani Raquel Queiroz Robert M. Westervelt James Hone Kin Chung Fong Measuring kinetic inductance and superfluid stiffness of two-dimensional superconductors using high-quality transmission-line resonators Physical Review Research |
| title | Measuring kinetic inductance and superfluid stiffness of two-dimensional superconductors using high-quality transmission-line resonators |
| title_full | Measuring kinetic inductance and superfluid stiffness of two-dimensional superconductors using high-quality transmission-line resonators |
| title_fullStr | Measuring kinetic inductance and superfluid stiffness of two-dimensional superconductors using high-quality transmission-line resonators |
| title_full_unstemmed | Measuring kinetic inductance and superfluid stiffness of two-dimensional superconductors using high-quality transmission-line resonators |
| title_short | Measuring kinetic inductance and superfluid stiffness of two-dimensional superconductors using high-quality transmission-line resonators |
| title_sort | measuring kinetic inductance and superfluid stiffness of two dimensional superconductors using high quality transmission line resonators |
| url | http://doi.org/10.1103/PhysRevResearch.6.043245 |
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