Last year, [Ted Yapo] built a magnetic imager from a single magnetometer placed on the ... Basically, it’s just a 12×12 grid of Hall effect sensors wired up to a bunch of analog multiplexers.

The anomalous Hall effect has been detected in a collinear antiferromagnet lacking net magnetization, challenging conventional understanding that links this effect to magnetization.

The reason this new effect—governed by the Hall mass—appears only in noncollinear antiferromagnets is because they have three ...

"There have been previous reports on the anomalous Hall effect appearing in a certain class of collinear antiferromagnets," says Nakatsuji, the principal investigator. "However, the observed ...