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Topological matter

Topological matter

Energy can move from a colder region to a hotter one – but the second law of thermodynamics is safe

05 May 2022 Isabelle Dumé
counterintuitive edge currents
The system supporting cross-currents. Courtesy: MA Martin-Delgado
Can energy move from a colder to a hotter region in a material without violating the second law of t

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Isabelle Dumé is a contributing editor to Physics World
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