Erratum: Transverse surface modes in ferromagnets: Coupled $\vec{M}$ and $\vec{m}$ [Phys. Rev. B 99, 104435 (2019)]

Figure 1

Proposed transverse magnon drag experiment with three layers. $\vec{E}$ in the upper layer is driven by a source voltage and, by the spin Hall effect, produces the spin current ${\vec{j}}_{m,y}$ ($j_s$ in the figure with $\sigma$ for the spin accumulation $\vec{m}$). $V_{ISHE}$ is the inverse spin Hall effect voltage that is measured across the bottom layer. The orientation of $\vec{M}$ is appropriate to the proposed transverse magnon drag effect. In the already-observed longitudinal magnon drag effect, $\vec{M}$ points along $z$ from the original paper.