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Title: | Mo/Au Bilayers Deposited by Sputtering at Room Temperature for Transition Edge Sensors Fabrication |
Authors: | González-Arrabal, Raquel CSIC ORCID; Camón, Agustín CSIC ORCID ; Parra-Borderías, María CSIC; Fàbrega, Lourdes CSIC ORCID; Anguita, José Virgilio CSIC; Sesé Monclús, Javier; Briones Fernández-Pola, Fernando | Keywords: | Transition edge sensors Superconducting device X-ray detectors Proximity effect Thin-films Bilayers Sputtering deposition |
Issue Date: | 25-Jan-2008 | Publisher: | Springer | Citation: | Journal of Low Temperature Physics 151(1-2): 239-244 (2008) | Abstract: | We report on the fabrication and characterisation of Mo/Au bilayers which are intended to be used as high resolution cryogenic imaging spectrometers for next generation of X-ray Astrophysical observatories in space. Mo/Au bilayers have been deposited by sputtering at room temperature on Si3N4 bulk and membranes. The composition of the bilayers as well as their interfaces have been characterised by Rutherford Backscattering Spectroscopy (RBS). Results indicate absence of interdiffusion. Further structural characterization has been performed by X-ray diffraction and Atomic Force Microscopy. The transition temperature T c of the Mo/Au bilayers has been tuned by changing the Au layer thickness. Very sharp superconducting transitions have been observed with transition widths as small as 0.3 mK. These films look therefore extremely promising for the intended detectors, as well as for other applications in materials science and nanotechnology. | Description: | From the issue entitled "Proceedings of the 12th International Workshop on Low Temperature Dectectors (LTD12)- Part I" | Publisher version (URL): | http://dx.doi.org/10.1007/s10909-007-9638-9 | URI: | http://hdl.handle.net/10261/34172 | DOI: | 10.1007/s10909-007-9638-9 | ISSN: | 0022-2291 |
Appears in Collections: | (IMN-CNM) Artículos |
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