Design of structured La$_{2-x}$Sr$_{x}$CuO$_{4}$ films as superconducting transition-edge sensors at 4.2K
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866913591213424640 |
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| author | Botana, M. M. Viz, A. S. Ramallo, M. V. |
| author_facet | Botana, M. M. Viz, A. S. Ramallo, M. V. |
| contents | We calculate the effects of carrier-density structuration and patterning on thin films of the cuprate superconductor La$_{2-x}$Sr$_{x}$CuO$_{4}$, in order to optimize its functional characteristics as sensing material for resistive transition-edge bolometers at liquid-He temperature. We perform finite-element computations considering two major contributions to structuration: The intrinsic random nanoscale disorder associated to carrier density nonstoichiometry, plus the imposition of regular arrangements of zones with different nominal carrier densities. Using ad-hoc seek algorithms, we obtain various structuration designs that markedly improve the bolometric performance, mainly the saturation power and dynamic range. Bolometric operation becomes favorable even in the easier-to-implement constant current mode of measurement. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_19656 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Design of structured La$_{2-x}$Sr$_{x}$CuO$_{4}$ films as superconducting transition-edge sensors at 4.2K Botana, M. M. Viz, A. S. Ramallo, M. V. Superconductivity Instrumentation and Detectors We calculate the effects of carrier-density structuration and patterning on thin films of the cuprate superconductor La$_{2-x}$Sr$_{x}$CuO$_{4}$, in order to optimize its functional characteristics as sensing material for resistive transition-edge bolometers at liquid-He temperature. We perform finite-element computations considering two major contributions to structuration: The intrinsic random nanoscale disorder associated to carrier density nonstoichiometry, plus the imposition of regular arrangements of zones with different nominal carrier densities. Using ad-hoc seek algorithms, we obtain various structuration designs that markedly improve the bolometric performance, mainly the saturation power and dynamic range. Bolometric operation becomes favorable even in the easier-to-implement constant current mode of measurement. |
| title | Design of structured La$_{2-x}$Sr$_{x}$CuO$_{4}$ films as superconducting transition-edge sensors at 4.2K |
| topic | Superconductivity Instrumentation and Detectors |
| url | https://arxiv.org/abs/2411.19656 |