| Zugriffsnummer | 28255 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Ultrasensitive broad band SQUID microsusceptometer for magnetic measurements at very low temperatures |
| Autor(in); Institution |
Martínez-Pérez, Maria José; Instituto de Ciencia de Materiales de Aragon, CSIC-Universidad de Zaragoza, SPAIN; Departamento de Fisica de la Materia Condensada, Universidad de Zaragoza, SPAIN
Sesé, Javier; Instituto de Ciencia de Materiales de Aragon, CSIC-Universidad de Zaragoza, SPAIN; Departamento de Fisica de la Materia Condensada, Universidad de Zaragoza, SPAIN
Luis, Fernando; Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC-Universidad de Zaragoza, Zaragoza, SPAIN; Dpto. de Física de la Materia Condensada, Universidad de Zaragoza, Zaragoza, SPAIN
Córdoba, Rosa; Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC-Universidad de Zaragoza, Zaragoza, SPAIN; Dpto. de Física de la Materia Condensada, Universidad de Zaragoza, Zaragoza, SPAIN
Drung, Dietmar; 7.2, Kryophysik und Spektrometrie, PTB-Berlin
Schurig, Thomas; 7.2, Kryophysik und Spektrometrie, PTB-Berlin
Bellido, Elena; Centro de Investigación en Nanociencia y Nanotecnología (CIN2, CSIC-ICN) Edificio CM7, Esfera UAB, SPAIN
De Miguel, Rocío; Laboratorio de Microscopías Avanzadas (LMA) - Instituto de Nanociencia de Aragón (INA), Universidad de Zaragoza, Zaragoza, SPAIN
Gómez-Moreno, Carlos; Laboratorio de Microscopías Avanzadas (LMA) - Instituto de Nanociencia de Aragón (INA), Universidad de Zaragoza, Zaragoza, SPAIN; Dpto. de Bioquímica, Universidad de Zaragoza, Zaragoza, SPAIN
Lostao, Anabel; Laboratorio de Microscopías Avanzadas (LMA) - Instituto de Nanociencia de Aragón (INA), Universidad de Zaragoza, Zaragoza, SPAIN; Fundación ARAID, Aragón, SPAIN
Ruiz-Molina, Daniel; Centro de Investigación en Nanociencia y Nanotecnología (CIN2, CSIC-ICN) Edificio CM7, Esfera UAB, Campus UAB, Cerdanyola del Vallés, SPAIN
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| Quelle/Jahr | IEEE Transactions on Applied Superconductivity: 21 (2011), 3, 345 - 348 |
| ISSN | 1051-8223 |
| DOI | |
| Verlag | New York: IEEE |
| Konferenzangaben | The 2010 Applied Superconductivity Conference, Washington, D.C., 01-06, August 2010, USA |
| Zusammenfassung | In this work we report the development and calibration of an ultrasensitive SQUID susceptometer capable of operating under extreme conditions of frequency (0.001 Hz – 1 MHz) and low temperatures (13 mK). 2-stage SQUID sensors fabricated at PTB-Berlin have been used as the starting point. Rerouting some connections of the SQUID’s input circuit, an integrated susceptometer with experimental spin sensitivity of 104 Bohr magneton/Hz1/2 is obtained. The modification of the chips is carried out using Focused Ion Beam Induced Deposition (FIBID) of amorphous W, using W(CO)6 as precursor gas. We have demonstrated that superconducting connections between W FIBID lines and Nb films can be fabricated and that they are operative at 4.2 K, providing then a powerful technique to fix errors of design in devices, repair damaged circuits, or to carry out modifications. The microsusceptometer offers new possibilities in the study of thin films or even monolayers of nanosized magnets, which have potential applications in diverse fields such as quantum computing, high-density information storage or on-chip magnetic refrigeration. |
Zitierung
Martínez-Pérez, M. J., Sesé, J., Luis, F., Córdoba, R., Drung, D., Schurig, T., Bellido, E., De Miguel, R., Gómez-Moreno, C., Lostao, A., & Ruiz-Molina, D. (2011). Ultrasensitive broad band SQUID microsusceptometer for magnetic measurements at very low temperatures. IEEE Transactions on Applied Superconductivity, 21(3), 345–348. https://doi.org/10.1109/tasc.2010.2082479