Characterization of a Mo/Au thermometer for ATHENA

Parra Borderías, Maria and Fernández Martínez, Ivan and Fábrega, Lourdes and Camón, Agustin and Gil, Oscar and Costa Krämer, Jose L. and Gonzalez Arrabal, Raquel and Sesé, Javier and Bueno, Juan and Briones Fernández-Pola, Fernando (2013). Characterization of a Mo/Au thermometer for ATHENA. "IEEE Transactions on Applied Superconductivity", v. 23 (n. 3); pp. 1-5. ISSN 1051-8223.


Title: Characterization of a Mo/Au thermometer for ATHENA
  • Parra Borderías, Maria
  • Fernández Martínez, Ivan
  • Fábrega, Lourdes
  • Camón, Agustin
  • Gil, Oscar
  • Costa Krämer, Jose L.
  • Gonzalez Arrabal, Raquel
  • Sesé, Javier
  • Bueno, Juan
  • Briones Fernández-Pola, Fernando
Item Type: Article
Título de Revista/Publicación: IEEE Transactions on Applied Superconductivity
Date: 2013
ISSN: 1051-8223
Volume: 23
Freetext Keywords: Proximity effect, radiation detectors, transition edge sensors
Faculty: Instituto de Energía Solar (IES) (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB)


The first dark characterization of a thermometer fabricated with our Mo/Au bilayers to be used as a transition edge sensor is presented. High-quality, stress-free Mo layers, whose thickness is used to tune the critical temperature (TC ) down to 100 mK, are deposited by sputtering at room temperature (RT ) on Si3N4 bulk and membranes, and protected from degradation with a 15-nm sputtered Au layer. An extra layer of high-quality Au is deposited by ex situ e-beam to ensure low residual resistance. The thermometer is patterned on a membrane using standard photolithographic techniques and wet etching processes, and is contacted through Mo paths, displaying a sharp superconducting transition (α ≈ 600). Results show a good coupling between Mo and Au layers and excellent TC reproducibility, allowing to accurately correlate dM o and TC . Since dAu is bigger than ξM for all analyzed samples, bilayer residual resistance can be modified without affecting TC . Finally, first current to voltage measurements at different temperatures are measured and analyzed, obtaining the corresponding characterization parameters.

More information

Item ID: 25854
DC Identifier:
OAI Identifier:
DOI: 10.1109/TASC.2012.2236140
Official URL:
Deposited by: Memoria Investigacion
Deposited on: 21 Sep 2014 08:19
Last Modified: 22 Sep 2014 11:38
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM