Reversible switching of magnon chirality. (IMAGE)

Institut Laue-Langevin

Reversible switching of magnon chirality.

Caption

Polarised neutron measurements on the IN20 instrument at Intitut Laue-Langevin show the chiral signal after cooling the sample in opposite magnetic fields: +4.2 mT (yellow) and −4.2 mT (green). Reversing the cooling field reverses the sign of the signal for both magnon modes, demonstrating that their handedness can be switched between left- and right-handed states.

Credit

Mechthild Enderle @ILL (2026)

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