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The de Haas-van Alphen effect has been studied in single crystals of purified barium, for magnetic field directions in the (110) plane and in a non-symmetry plane. Three sets of oscillations with minimum frequency values 0.33, 0.46, and 1.95 x 103 T have been observed and their angular variations of frequency can be represented by hyperboloidal, ellipsoidal and cylindrical surfaces of revolution about <111>, <111> and <100> respectively. All the oscillations are qualitatively accounted for by associating them with the tetracube hole sheet of the Fermi surface predicted by Johansen’s band structure calculation, but no oscillations arising from the superegg electron sheet have been observed. Cyclotron mass measurements are presented for some extremal orbits and the mass enhancement factor is shown to be small.
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K.A. McEwen (1971) studied this question.
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