Topological phases are not restricted to electronic systems. They can also occur in magnetic materials whose properties are described in terms of magnetic waves--or so-called magnons. However, even though scientists have established techniques to generate and read out magnon currents, they have so far been unable to directly ascertain a magnon topological phase.
Topological phases are not restricted to electronic systems. They can also occur in magnetic materials whose properties are described in terms of magnetic waves--or so-called magnons. However, even though scientists have established techniques to generate and read out magnon currents, they have so far been unable to directly ascertain a magnon topological phase.
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