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arXiv · 1604.05660

Comment on two papers claiming records for the lowest carrier concentration at which superconductivity has been observed

D. M. Eagles
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Abstract

A recent paper and a preprint both claim records for the lowest carrier concentration at which superconductivity has been observed. However colleagues in Australia and I found evidence for superconductivity at concentrations of the order of at least a hundred times lower in the 1980's, in a ceramic sample of SrTiO_3 with 3% of Ti replaced by Zr.

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D. M. Eagles. 2016-04-13. Comment on two papers claiming records for the lowest carrier concentration at which superconductivity has been observed. https://arxiv.org/abs/1604.05660

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