Complete stationary surfaces in R14 with total Gaussian curvature −∫KdM=6π

In a previous paper we classified complete stationary surfaces (i.e. spacelike surfaces with zero mean curvature) in 4-dimensional Lorentz space R14 which are algebraic and with total Gaussian curvature −∫KdM=4π. Here we go on with the study of such surfaces with −∫KdM=6π. It is shown in this paper that the topological type of such a surface must be a Möbius strip. On the other hand, new examples with a single good singular end are shown to exist.