De Haas-van Alphen effect in LaAl2

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Abstract
The Fermi surface of the cubic Laves phase LaAl2 is studied by means of de Haas-van Alphen (dHvA) effect measurements. Three groups of dHvA frequencies are observed between F = 0.15 and 82.7 MG with cyclotron masses between m*/m0 = 0.11 and 1.70. The highest dHvA frequencies correspond to a large Fermi surface essentially spherical but with bumps in ⟨ 100 ⟩ directions and are in agreement with APW energy band calculations [l]. More detailed self-consistent relativistic energy band calculations are necessary in order to interpret the lower dHvA frequencies as due to small (hole) surfaces and then to decide how the nearby f-bands of La effect the electronic properties of LaAl2

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