7. Superconductivity - University of Liverpool
7. Superconductivity - University of Liverpool
7. Superconductivity - University of Liverpool
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The Isotope Effect.<br />
If electrons repel each other, how can they form a pair?<br />
The clue: In 1950, the superconducting temperature <strong>of</strong><br />
Mercury was found to be different for different isotopes <strong>of</strong><br />
Mercury.<br />
Reynolds, et al, Physical Review, vol. 78 (1950) p. 487<br />
The only difference between isotopes is the number <strong>of</strong> neutrons<br />
in the nuclei. This should not affect the conduction electrons!<br />
<strong>Superconductivity</strong> 46