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. 2012 Oct 11;2:726. doi: 10.1038/srep00726

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Copyright © 2012, Macmillan Publishers Limited. All rights reserved

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(a) Shubnikuv-de Hass oscillations at different temperatures. The green dashed lines mark the SdH dips at Laudau filling factors of 5, 6, 7, and 8. (b) Landau-level fan diagram for SdH oscillations in ΔR_xx. Linear fitting of the periodic maxima and minima as a function of the Landau level index n gives a nonzero intersects of 0.29, corresponding to a nonzero Berry's phase of 0.42π. (c) Temperature dependence of the normalized conductivity amplitude Δσ_xx(T)/Δσ_xx(0). The solid line (red) is best fit to λ(T)/sinh(λ(T)). A magnetic field of 7.6 T was used to extract the cyclotron effective mass: ∼0.111m₀. (d) Dingle plots of log [(ΔR/R₀)Bsinh(λ)] versus 1/B at four different temperatures. Transport lifetime τ, mean free path , and mobility μ can be extracted from the best fit to log [(ΔR/R₀)Bsinh(λ)].

Inline graphic — (a) Shubnikuv-de Hass oscillations at different temperatures. The green dashed lines mark the SdH dips at Laudau filling factors of 5, 6, 7, and 8. (b) Landau-level fan diagram for SdH oscillations in ΔR_xx. Linear fitting of the periodic maxima and minima as a function of the Landau level index n gives a nonzero intersects of 0.29, corresponding to a nonzero Berry's phase of 0.42π. (c) Temperature dependence of the normalized conductivity amplitude Δσ_xx(T)/Δσ_xx(0). The solid line (red) is best fit to λ(T)/sinh(λ(T)). A magnetic field of 7.6 T was used to extract the cyclotron effective mass: ∼0.111m₀. (d) Dingle plots of log [(ΔR/R₀)Bsinh(λ)] versus 1/B at four different temperatures. Transport lifetime τ, mean free path , and mobility μ can be extracted from the best fit to log [(ΔR/R₀)Bsinh(λ)].