In order to clarify the notation of transverse and longitudinal responses ( electrical and thermoelectric ) , in the below table , we define all of the transport parameters with their corresponding directions used in this study . A more detailed discussion on the transport coefficients is presented in ref . S4 .   Figure S4 . Magnetic - field - dependent Nernst thermopower ( Sxy ) data discussed in the main text at selected temperatures up to room temperature .