High resolution thermal imaging of hotspots in superconducting films
Journal article, 2007

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.

Author

O. Haugen

University of Oslo

T. H. Johansen

University of Oslo

H. Chen

University of Oslo

V. Yurchenko

University of Oslo

P. Vase

NKT Research & Innovation AS

Dag Winkler

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

B. A. Davidson

Laboratorio Nazionale TASC

Gabriel Testa

National Reseach Council of Italy (CNR), Institute of Applied Sciences and Intelligent Systems "Eduardo Caianiello"

E. Sarnelli

National Reseach Council of Italy (CNR), Institute of Applied Sciences and Intelligent Systems "Eduardo Caianiello"

E. Altshuler

Universidad de La Habana

IEEE Transactions on Applied Superconductivity

1051-8223 (ISSN)

Vol. 17 2/3 3215-3218

Subject Categories

Physical Sciences

DOI

10.1109/TASC.2007.899341

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Latest update

5/8/2018 6