Angular dependence of magnetoresistance in strongly anisotropic quasi-two-dimensional metals for various Landau-level shapes

Abstract

We present the quantum-mechanical calculations of the angular dependence of interlayer conductivity ${\sigma }_{zz}(\theta )$ in a tilted magnetic field in quasi-2D layered metals. Our calculation shows that the LL shape is important for this angular dependence. In particular, the amplitude of angular magnetoresistance oscillations (AMRO) is much stronger for the Gaussian LL shape than for the Lorentzian. The ratio ${\sigma }_{zz}(\theta =0)/{\sigma }_{zz}(\theta ->\pm 90^{\circ })$ is also several times larger for the Gaussian LL shape. AMRO and Zeeman energy splitting lead to a spin current. For typical organic metals and for a medium magnetic field 10T this spin current is only a few percent of the charge current, but its value may almost reach the charge current for special tilt angles of magnetic field. The spin current has strong angular oscillations, which are phase-shifted as compared to the usual AMRO.

8 pages, 3 figures

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• Magnetic oscillations of in-plane conductivity in quasi-two-dimensional metals
• False spin zeros in the angular dependence of magnetic quantum oscillation in quasi-two-dimensional metals
• Yamaji effect and quantum oscillation in Yang-Rice-Zhang model of underdoped cuprates