DE HASS-VAN ALPHEN EFFECT AND FERMI SURFACE OF WHITE TIN

We report here the results of an extensive investigation of the de Haas-van Alphen effect in white tin. These results agree qualitatively with the predictions of Weisz's pseudopotential model for the tin Fermi surface; for every case in which Weisz's model differs qualitatively from the single-orthogonalized-plane-wave model, our data agree with the former. Quantitative agreement, however, has not been obtained. The experimentally determined cross-sectional areas of the Fermi surface typically differ by about 30% from those calculated by Weisz. Area branches are also reported that are due to coupled orbits generated by magnetic breakdown of the spin-orbit-coupling- induced energy gap between the third and fourth bands near the XL and XP zone lines. © 1968 The American Physical Society.