The superconducting transition width and illumination wavelength dependence of the response of MgO substrate YBCO transition edge bolometers

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dc.citation.epage11en_US
dc.citation.issueNumber1-2en_US
dc.citation.spage6en_US
dc.citation.volumeNumber458en_US
dc.contributor.authorOktem, B.en_US
dc.contributor.authorBozbey, A.en_US
dc.contributor.authorAvci, I.en_US
dc.contributor.authorTepe, M.en_US
dc.contributor.authorAbukay, D.en_US
dc.contributor.authorFardmanesh, M.en_US
dc.date.accessioned2016-02-08T10:13:53Z
dc.date.available2016-02-08T10:13:53Z
dc.date.issued2007en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractDependence of the phase and magnitude of the response of MgO substrate YBa2Cu3O7-δ (YBCO) transition edge bolometers to the near infrared radiation on the superconducting transition width is presented in this work. The bolometers were made of YBCO thin films of 200 nm thickness that were grown on single crystal MgO (1 0 0) substrates by DC inverted cylindrical magnetron sputtering. We have measured the responses of both large and small area devices with respect to the bias temperature and radiation modulation frequency. We have observed that the superconducting transition width has major effects on the response of the bolometers such as; on a dip of the phase of the response versus modulation frequency curve around 1 Hz, the rate of decrease of the magnitude of the response, and dependence of the phase of the response on temperature at mid-range modulation frequency. We have investigated a correlation between the superconducting transition width and the YBCO film surface morphology of the devices. In addition, the illumination wavelength dependence of the optical response of both wide and narrow transition width devices has been investigated. Here we present the analysis and the possible mechanisms that can affect the response of the bolometers at the superconducting transition region.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:13:53Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2007en
dc.identifier.doi10.1016/j.physc.2007.02.016en_US
dc.identifier.eissn1873-2143
dc.identifier.issn0921-4534
dc.identifier.urihttp://hdl.handle.net/11693/23435
dc.language.isoEnglishen_US
dc.publisherElsevier BV * North-Hollanden_US
dc.relation.isversionofhttps://doi.org/10.1016/j.physc.2007.02.016en_US
dc.source.titlePhysica C: Superconductivity and its Applicationsen_US
dc.subjectHigh temperature superconductor devicesen_US
dc.subjectHigh-Tc superconducting transition temperatureen_US
dc.subjectOptical responseen_US
dc.subjectSurface morphologyen_US
dc.subjectYBCO transition edge bolometersen_US
dc.titleThe superconducting transition width and illumination wavelength dependence of the response of MgO substrate YBCO transition edge bolometersen_US
dc.typeArticleen_US

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Institute of Materials Science and Nanotechnology (UNAM)
Department of Electrical and Electronics Engineering