168388 20260204153543.0 doi 10.1063/5.0303520 sideral 147847 ART-2026-147847 eng Fàbrega, Lourdes Mo/Au transition-edge sensors: Effect of sensor size and absorber stem position on parameters and noise 2026 The basic transition parameters and excess noise of Mo/Au-based transition-edge sensor (TES) x-ray detectors without banks and with Au absorber are analyzed as a function of TES dimensions and absorber stems position. We show the effect of the absorber stems and TES dimensions on these parameters. We observe that the logarithmic derivatives of R(T) are reduced and develop non-monotonous behavior vs bias as stems are placed on the Mo/Au sensor area, progressively disturbing the current flow inside the TES. TESs with outer tangent stems display higher excess noise but also higher figures of merit because of their higher α and β values. We find that both longer and narrower TESs have higher excess noise so that a trade-off is required for TES performance optimization. We discuss some hints for that. The possible origins of the experimental excess noise of these devices are also explored and discussed. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S info:eu-repo/grantAgreement/ES/DGA/E09-23R-QMAD info:eu-repo/grantAgreement/ES/MICINN/CEX2023-001286-S info:eu-repo/grantAgreement/ES/MICINN/PID2021-122955OB-C42 info:eu-repo/grantAgreement/ES/MICINN/2021-SGR-00445 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Camón, Agustín (orcid)0000-0001-7289-5649 Pobes, Carlos (orcid)0000-0002-5457-3694 Strichovanec, Pavel Bolea, J. (orcid)0000-0003-4068-127X 139 (2026), 034502 [10 pp.] J. appl. physi. Journal of Applied Physics 0021-8979 optical microscope images of TESs, graphs of Z(¿) with fits, error bars on parameters extracted from Z(¿) fits, and a representative graph of noise and its contributions. https://aip.figshare.com/collections/Mo_Au_Transition-Edge_Sensors_effect_of_sensor_size_and_absorber_stem_position_on_parameters_and_noise_/8218766 2789533 http://zaguan.unizar.es/record/168388/files/texto_completo.pdf Versión publicada 1081980 http://zaguan.unizar.es/record/168388/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:168388 articulos driver 2026-02-04-13:15:02 ARTICLE