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High resolution thermal imaging of hotspots in superconducting films

O. Haugen ; T. H. Johansen ; H. Chen ; V. Yurchenko ; P. Vase ; Dag Winkler (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; B. A. Davidson ; G. Testa ; E. Sarnelli ; E. Altshuler
IEEE Transactions on Applied Superconductivity (1051-8223). Vol. 17 (2007), 2/3, p. 3215-3218.
[Artikel, refereegranskad vetenskaplig]

Thermal imaging of hotspots in bridge structures of YbaCuO thin films is presented with micrometer resolution. Hotspots formed by passing transport currents are observed using a method based on the temperature dependence in the photoluminescence of a polymer thin film deposited on the superconductor. The hotspots are self maintained and have hysteretic behavior. An external magnetic field changes their behavior. The temperature distribution over the bridge and in its vicinity can be observed with a resolution better than 0.1 K. Also details of the experimental method will be reported.



Denna post skapades 2008-12-19. Senast ändrad 2014-11-10.
CPL Pubid: 82377

 

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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik

Ämnesområden

Fysik

Chalmers infrastruktur