Superconductors in Color
As iron-rich superconductors cool to very low temperatures, even a perfect crystal can become distorted. Under polarized light, researchers find that brilliantly colored stripes emerge from the light reflecting differently off each distorted crystal domain.
Related AbstractIn-plane structural and electronic anisotropy in de-twinned CaFe2As2 compounds
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Journalists wishing to reproduce this image for news stories about related research should include the following image credit: Erick C. Blomberg, Makariy A. Tanatar and Ruslan Prozorov, US DOE The Ames Laboratory.