Magnon-Induced Electric Polarization and Magnon Nernst Effects

•The transport of magnons can induce measurable electric polarization, enabling the control and detection of magnon spin and orbital transport through electrical or optical methods.

•The Dzyaloshinskii–Moriya Interaction (DMI) is important. In the absence of DMI, the number of charges on each side is equal (panel b), resulting in zero net electric polarization. The presence of DMI results in a nonzero net polarized charge due to the difference in the populations of magnons carrying opposite orbital angular moment (c).

•This finding opens exciting opportunities across the fields of magnonics, spintronics, and orbitronics by providing strategies for designing and engineering materials to enhance conversion between magnons and electric polarization.