Figure 2. Color map of a thermoelectric signal that captures the fluctuations in superconductivity. (IMAGE)

Tokyo Institute of Technology

Figure 2. Color map of a thermoelectric signal that captures the fluctuations in superconductivity.

Caption

The full picture of fluctuations in superconductivity has been revealed over a wide magnetic field range and over a wide temperature range, from much higher than the superconducting transition temperature to very low temperature of 0.1 K. The existence of a crossover line between thermal (classical) and quantum fluctuations is demonstrated for the first time, and the quantum critical point where this line reaches absolute zero is found to exist inside the anomalous metallic region.

Credit

Koichiro Ienaga

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CC BY-NC-ND

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