Print Email Facebook Twitter Lateral Inverse Proximity Effect in Ti/Au Transition Edge Sensors Title Lateral Inverse Proximity Effect in Ti/Au Transition Edge Sensors Author Nagayoshi, K. (SRON Netherlands Institute for Space Research) de Wit, M. (SRON Netherlands Institute for Space Research) Taralli, E. (SRON Netherlands Institute for Space Research) Visser, S. (SRON Netherlands Institute for Space Research) Ridder, M. L. (SRON Netherlands Institute for Space Research) Gottardi, L. (SRON Netherlands Institute for Space Research) Akamatsu, H. (SRON Netherlands Institute for Space Research) Vaccaro, D. (SRON Netherlands Institute for Space Research) Gao, J.R. (TU Delft ImPhys/Optics; SRON Netherlands Institute for Space Research) Date 2022 Abstract We report measured Tc of superconducting Ti/Au bilayer strips with a width W varying from 5 to 50 µm. The strips were fabricated based on a Ti/Au bilayer that consists of a 41-nm-thick Ti layer to which a 280-nm-thick Au layer was added. We find that the Tc drops as W decreases and the declining trend almost perfectly follows Tc/ [mK] = - 738.4 [μ m] 2/ W2+ 91.0 , where Tc(W= ∞) of 91 mK is consistent with the intrinsic Tc of the bilayer. The result is interpreted as a consequence of the lateral inverse proximity effect originated in normal-metal microstructures, namely Au overhangs that exist at the edges of the Ti/Au bilayer. The Tc shift from the intrinsic Tc should be anticipated in addition to the longitudinal proximity effect from superconducting Nb leads when one designs Ti/Au TESs. Subject AthenaBilayerMicrocalorimeterProximity effectTESTi/AuX-IFUX-ray To reference this document use: http://resolver.tudelft.nl/uuid:223bdd73-fc91-47c9-8b3d-ffb4c20346ff DOI https://doi.org/10.1007/s10909-022-02828-3 Embargo date 2023-07-01 ISSN 0022-2291 Source Journal of Low Temperature Physics, 209 (3-4), 540-547 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 K. Nagayoshi, M. de Wit, E. Taralli, S. Visser, M. L. Ridder, L. Gottardi, H. Akamatsu, D. Vaccaro, J.R. Gao, More Authors Files PDF s10909_022_02828_3.pdf 1.61 MB Close viewer /islandora/object/uuid:223bdd73-fc91-47c9-8b3d-ffb4c20346ff/datastream/OBJ/view