A theoretical transport study of intercalated graphite CaC6 in its uniaxial charge-density-wave ground state, where the CDW reconstructs closed Fermi pockets into open contours and opens a pseudo-gap. Treating coherent magnetic breakdown between reconstructed sheets in a strong perpendicular field with a quantum density-matrix plus semiclassical approach, the authors compute the magnetoconductivity tensor and show its classical components (sigma_xx ~ B^-2 along the CDW apex, sigma_yy ~ const across it, Hall sigma_xy ~ B^-1) all acquire strong oscillations periodic in inverse field that reshape rather than merely correct the classical result, making the magnetotransport essentially non-classical.
A theoretical transport study of the intercalated graphite superconductor CaC6 in its uniaxial charge-density-wave (CDW) ground state. The CDW reconstructs the originally closed Fermi-surface pockets…