Abstract
We have measured the de Haas–van Alphen (dHvA) effect and the magnetoresistance in orthorhombic YbBi 2. The eight dHvA branches α, β, γ, δ, ε, ζ, η, and θ were observed in the frequency range of 40–4000 T. The cyclotron masses range from 0.07 m 0 to 1.4 m 0. The lowest-frequency branch α originates from a small cylindrical Fermi surface elongated the b-axis. The branch β corresponds to a nearly spherical Fermi surface with the frequency about 1700 T. The branches γ, δ, ε, and ζ with the frequencies 2000–4000 T are in limited field angle region near the b-axis. The results of the magnetoresistance are explained by above Fermi surface features with the open orbit along the b-axis.
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