Analysis of SdH oscillations. (a) Temperature dependence of the oscillation amplitudes. Symbols are experimental data, while lines are best fits to Eq. (1). Black, blue, and red are for Landau levels n = 1, n = 2, and n = 3, respectively. (b) Temperature dependence of the SdH oscillation amplitude for fields along three axes. Open circle, B ∥ a; open diamond, B ∥ b; asterisk, B ∥ c. Solid lines are fits to Eq. (1), from which the cyclotron masses are estimated as m_a = 0.180m_e, m_b = 0.034m_e, and m_c = 0.154m_e. (c) Landau plot of the oscillations. The solid lines are linear fits.