The Fermi surface of aluminium

摘要: Abstract The de Haas–van Alphen data in aluminium are compared with periods arising from extremal sections on a Fermi surface defined by fourth-order secular equation. Fourier coefficients V 111 and 200 of the weak pseudopotential regarded as adjustable parameters. Several different models for shown to be possible depending values 200. These considered systematically. An almost exact fit is obtained = 0·0179 Ry 0·0562 Ry. resulting differs one proposed Harrison only third zone near W, where low-frequency determines topology. As expected cyclotron masses all lower than experimental about one-third.