YBCO films on SrTio3 substrates with recordly low 1/f noise for bolometer applications

B. Dam, F. C. Klaassen*, J. M. Huijbregtse, Igor A. Khrebtov, K. V. Ivanov, S. V. Baryshev

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeChapterScientificpeer-review

Abstract

The excess 1/f noise investigations of YBCO films on SrTiO3 substrates are reported.The epitaxial films produced by the laser ablation are characterized by the high perfectstructure, sharp superconducting transition, strong pinning and very low excess 1/f noise.It is observed that the level at normal state depends on the dislocation density. The bestnoise properties are observed for films with the dislocation density of (8-12) disl/Μm2.These films have noise Hooge-parameters of around (1.6-3)×10-6, which is 3 order lessthan published values. The calculation of the bolometer based on investigated films,shows the possibility to reach the noise equivalent power limited by only the phononnoise in the modulating frequency range beginning above 0.1 Hz.

Original languageEnglish
Title of host publicationBolometers
Subtitle of host publicationTheory, Types and Applications
PublisherNova Science Publishers
Pages173-182
Number of pages10
ISBN (Print)9781617282898
Publication statusPublished - Jan 2011

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