Calculations of magnetoresistance in metals have been made taking into account the contributions of open orbits. Details of the open orbits in copper have been worked out and the specific resistance has been calculated for a number of current axes. Results of experimental measurements of transverse magnetoresistance in oriented single crystals of copper and silver are reported. These results have been compared to the calculation and both experimental and theoretical curves are given. Fermi surface neck diameters have been derived from the data and comparison is made with data obtained from magnetoacoustic attenuation experiments.

• Received 3 September 1963

DOI:https://doi.org/10.1103/PhysRev.133.A521