The weak-field Hall coefficient and magnetoresistance are computed for a metallic model in which the Fermi surface has the form of a cube with rounded edges and corners. Exact and relatively simple results are obtained as a function of a parameter which allows the shape of the Fermi surface to evolve continuously from a sphere to a cube with sharp edges and corners. In going from the one extreme to the other, the Hall coefficient decreases monotonically from 1/ne to 1/4 pi/ne, while the Seitz magnetoresistance coefficients b, c, and d increase monotonically from zero to infinity (for b and d) and to 1-(8/3 pi)(for c). The results are interpreted and compared with the galvanomagnetic properties of other types of models. (Author)
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