Ultra-thin material creates a magnetic mystery

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Ultra-thin material creates a magnetic mystery

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Bismuth crystals reflect light in all colours of the rainbow

Oliver Berg/dpa/Alamy

Ultra-thin flakes of bismuth display mysterious magnetic properties – which could help the soft, iridescent metal become a wonder material for making greener electronics.

“Frankly, I’m still waking up at night because I wonder: what is at play here?” says

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at McGill University in Montreal, Canada.

Researchers have suspected that very thin flakes of bismuth could have unusual physical properties, as other ultra-thin materials like carbon-based graphene do. But because bismuth is so…

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