| Zugriffsnummer | 28131 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | High sensitivity SQUID-detection and feedback-cooling of an ultrasoft microcantilever |
| Autor(in); Institution |
Vinante, A.; Leiden Institute of Physics, Leiden University, Leiden, THE NETHERLANDS
Kirste, Alexander; 7.2, Kryophysik und Spektrometrie, PTB-Berlin
den Haan, A.; Leiden Institute of Physics, Leiden University, Leiden, THE NETHERLANDS
Usenko, O.; Leiden Institute of Physics, Leiden University, Leiden, THE NETHERLANDS
Wijts, G.; Leiden Institute of Physics, Leiden University, Leiden, THE NETHERLANDS
Jeffrey, E.; Leiden Institute of Physics, Leiden University, Leiden, THE NETHERLANDS
Sonin, P.; Leiden Institute of Physics, Leiden University, Leiden, THE NETHERLANDS
Bouwmeester, D.; Leiden Institute of Physics, Leiden University, Leiden, THE NETHERLANDS
Oosterkamp, D.; Leiden Institute of Physics, Leiden University, Leiden, THE NETHERLANDS
|
| Quelle/Jahr | Applied Physics Letters: 101 (2012), 12, 123101-1 - 123101-4 |
| ISSN | 0003-6951 (PRINT) ; 1077-3118 (ONLINE) |
| DOI | |
| Verlag | Melville, NY: American Institute of Physics |
| Klassifikationscode | PACS: 85.85.+j ; PACS: 07.07.Df ; PACS: 07.10.Cm ; PACS: 85.25.Dq ; IPC: B81B ; IPC: H01L27/18 ; IPC: H01L39/00 |
| Zusammenfassung | We measure the motion of an ultrasoft cantilever, carrying a ferromagnetic particle, by means of a Superconducting Quantum Interference Device (SQUID). In our scheme, the cantilever motion modulates the magnetic flux in the SQUID due to the coupling with the magnetic particle. For the cantilever fundamental mode, cooled to temperatures below 100 mK, we achieve a dimensionless coupling factor as large as 0.07, displacement sensitivity of 200 fm/√Hz and subattonewton force sensitivity. We demonstrate the outstanding combination of very low displacement and force noise by feedback-cooling the cantilever mode to an effective mode temperature of 160 μK. |
Zitierung
Vinante, A., Kirste, A., den Haan, A., Usenko, O., Wijts, G., Jeffrey, E., Sonin, P., Bouwmeester, D., & Oosterkamp, D. (2012). High sensitivity SQUID-detection and feedback-cooling of an ultrasoft microcantilever. Applied Physics Letters, 101(12), 123101-1–123101-4. https://doi.org/10.1063/1.4752766