The magnetic flux in a superconducting loop can only change by discrete jumps called phase slips. The energy dissipated by an individual phase slip has now been detected thanks to advances in precision temperature measurements.
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Aumentado, J. A SQUID cools down after a slip. Nat. Phys. 19, 152–153 (2023). https://doi.org/10.1038/s41567-022-01879-3
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DOI: https://doi.org/10.1038/s41567-022-01879-3
