Thermomagnetic transport coefficients: Solitons in an easy-plane magnetic chain

Using a simple model, we calculate the transport properties of a one-dimensional easy-plane ferromagnet in the presence of an in-plane magnetic field. The model incorporates the combined effects of a magnetic field gradient and a temperature gradient acting on a gas of solitons and spin waves. Suggestions are made for experiments capable of measuring these effects in materials such as ${\mathrm{CsNiF}}_3$ and (${\mathrm{C}}_6$${\mathrm{H}}_{11}$${\mathrm{NH}}_3$)${\mathrm{CuBr}}_3$. We also discuss their use as another type of probe for solitons.