Key Highlights
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A new study suggests the “missing” first Shapiro step in Josephson junctions, often thought to be a sign of exotic Majorana particles, can be explained by the inherent non-linearity of the junction’s electrical behavior. This finding is significant because it offers a more conventional explanation for the phenomenon, potentially challenging the interpretation of such missing steps as definitive proof of Majorana bound states.
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Researchers conducted measurements on aluminum/tungsten ditelluride (Al/WTe2) junctions, which have low-to-moderate transparency, to reach their conclusion about the missing Shapiro step. This work is important as it highlights how the basic physical properties of a material junction can mimic signs of more exotic physics, urging caution in the search for quantum computing building blocks.
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