A new model for the Fermi surface of LaB6 was proposed. It consisted of spherical balls at X points connected by short necks, instead of the slender necks previously considered, and small ellipsoid-electron-pockets which were elongated along the Σ axes and overlapped on the necks. Angular variations of the frequencies and intensities of the de Haas-van Alphen signals were calculated. Accumulated data were explained consistently. The model was obtained by displacing the unoccupied 4f levels upwards from those of the self-consistent band calculation. This indicated the importance of the correction to the local density approximation for the 4f states.

New Interpretation of the De Haas-Van Alphen Signals of LaB6. Harima, H., Sakai, O., Kasuya, T., Yanase, A.: Solid State Communications, 1988, 66[6], 603-7