Working with a new experimental technique called the ac elastocaloric effect, a team of scientists from Dresden, Karlsruhe, St Andrews, Cornell, Tsukuba and Stanford has mapped out the so-called phase diagram of the unconventional superconductor Sr2RuO4. The results narrow down the on-going, 25 years quest to understand the superconductivity of Sr2RuO4 and set a benchmark for future work.
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