Precise determination of magnetic moment of a fluxoid quantum in a superconducting microring
Using dynamic cantilever magnetometry and experimentally determining the cantilever's vibrational mode shape, we precisely measured the magnetic moment of a lithographically defined micron-sized superconducting Nb ring, a key element for the previously proposed subpiconewton force standard. The...
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| Veröffentlicht in: | Physical review. B 2017-02, Vol.95 (6), Article 064505 |
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| container_title | Physical review. B |
| container_volume | 95 |
| creator | Choi, Heonhwa Kim, Yun Won Lee, Soon-Gul Choi, Mahn-Soo Kim, Min-Seok Choi, Jae-Hyuk |
| description | Using dynamic cantilever magnetometry and experimentally determining the cantilever's vibrational mode shape, we precisely measured the magnetic moment of a lithographically defined micron-sized superconducting Nb ring, a key element for the previously proposed subpiconewton force standard. The magnetic moments due to individual magnetic fluxoids and a diamagnetic response were independently determined at T=4.3 K, with a subfemtoampere-square-meter resolution. The results show good agreement with the theoretical estimation yielded by the Brandt and Clem model within the spring constant determination accuracy. |
| doi_str_mv | 10.1103/PhysRevB.95.064505 |
| format | Article |
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| ispartof | Physical review. B, 2017-02, Vol.95 (6), Article 064505 |
| issn | 2469-9950 2469-9969 |
| language | eng |
| recordid | cdi_proquest_journals_2120900479 |
| source | American Physical Society Journals |
| subjects | Diamagnetism Magnetic measurement Magnetic moments Magnetism Model accuracy Spring constant Superconductivity |
| title | Precise determination of magnetic moment of a fluxoid quantum in a superconducting microring |
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