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Roton

The roton is an excitation that describes the macroscopic rotational states of suprafluids.

 


Explanation

The experiments of William Frank Vinen showed that the macroscopic rotational motion is quantized and that rotons carry the quanta of angular momentum.

 


Additional information

This quasiparticle was introduced in 1941 by the Russian physicist Lew Landau.

 


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