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Paramagnons

The long and the short of it

Paramagnons with unexpectedly long lifetimes are observed in the paramagnetic state at temperatures above the antiferromagnetic ordering temperature in TlCuCl3, posing a challenge to theory.

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Figure 1: Temperature dependence of magnon and paramagnon energies.

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Correspondence to Oleg P. Sushkov.

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Sushkov, O. The long and the short of it. Nature Phys 10, 339–340 (2014). https://doi.org/10.1038/nphys2955

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