When vibrations increase on cooling: Anti-freezing observed

An international team has observed an amazing phenomenon in a nickel oxide material during cooling: Instead of freezing, certain fluctuations actually increase as the temperature drops. Nickel oxide is a model system that ...

Mott insulator exhibits a sharp response to electron injection

In a finding that will give theorists plenty to ponder, an all-RIKEN team has observed an unexpected response in an exotic material known as a Mott insulator when they injected electrons into it. This observation promises ...

Exotic superconductors: The secret that wasn't there

A single measurement result is not a proof—this has been shown again and again in science. We can only really rely on a research result when it has been measured several times, preferably by different research teams, in ...

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