English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/51125
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Ultrasensitive Broad Band SQUID Microsusceptometer for Magnetic Measurements at Very Low Temperatures

AuthorsMartínez Pérez, M. J.; Sesé Monclús, Javier ; Luis, Fernando; Córdoba, R.; Drung, D.; Schurig, T.; Bellido, Elena ; Miguel, Rocío de; Gómez-Moreno, C.; Lostao, Anabel; Ruiz Molina, Daniel
Issue Date2011
PublisherInstitute of Electrical and Electronics Engineers
CitationIEEE Transactions on Applied Superconductivity 21: 345-348 (2011)
AbstractIn this work we report the development and calibration of an ultrasensitive SQUID susceptometer capable of operating over an extremely wide frequency range (0.001 Hz-1 MHz) at extremely low temperatures (13 mK). Starting with 2-stage SQUID sensors fabricated at PTB-Berlin, an integrated susceptometer with experimental spin sensitivity of 104 Bohr magneton/Hz1/2 is obtained by rerouting some SQUID input circuit connections. 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 operate at 4.2 K, providing a powerful technique for fixing errors in device designs, repairing damaged circuits, or modifying existing ones. The microsusceptometer offers new possibilities in the study of thin films or even monolayers of nanosized magnets, and has potential applications in diverse fields such as quantum computing, high-density information storage or on-chip magnetic refrigeration.
URIhttp://hdl.handle.net/10261/51125
DOI10.1109/TASC.2010.2082479
Identifiersdoi: 10.1109/TASC.2010.2082479
issn: 1051-8223
Appears in Collections:(CIN2) Artículos
(ICMA) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.