New research unveils the first experimental evidence of the anomalous Hall effect arising in a collinear antiferromagnet exhibiting non-Fermi liquid behavior.
A team of international researchers, led by Mayukh Kumar Ray, Mingxuan Fu, and Satoru Nakatsuji of the University of Tokyo, in collaboration with Collin Broholm from Johns Hopkins University, has observed the anomalous Hall effect in a collinear antiferromagnetic, a phenomenon previously thought to be exclusive to ferromagnets. Even more remarkably, this effect arises from a non-Fermi liquid state, where electrons behave in ways that deviate from conventional theoretical models.
This discovery, published in Nature Communications, challenges established textbook explanations of the anomalous Hall effect and expands the range of antiferromagnetic materials that could be harnessed for future information technologies.
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