Magnetoresistance of very pure simple metals

High-magnetic-field anomalies in pure and simple metals such as Al, K, and In are explained in terms of carrier transport along two-dimensional skipping orbit states. Our approach explains in a very simple way the linear magnetoresistance due to grooves and projections at the sample surface. Our approach also provides an explanation for the negative voltages measured in certain geometries. © 1990 The American Physical Society.