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A new review throws the spotlight on heterostructures of topological insulators and magnetic materials, where the interplay of magnetism and topology can give rise to exotic quantum phenomena that are promising building blocks for future low-power electronics. Provided suitable candidate materials are found, a 'cocktail' of topological physics and magnetism could produce these key states at room temperature and without any magnetic field, making them a viable ultra-low energy alternative to current, CMOS electronics.

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