Probing Fermi surface anisotropies in layered metals with AMRO

A layered crystal structure and strong interactions between electrons are common features of many interesting electronic materials. The coherence of interlayer charge transport and origin of intralayer anisotropies in such materials are important questions. We show that angle dependent magnetoresistance oscillations (AMRO) are sensitive to anisotropies around an intralayer Fermi surface, and discuss their asymptotic behaviour in the high field limit

Normal state anisotropic scattering in overdoped Tl2Ba2CuO6+δ

The interlayer magnetoresistance of overdoped Tl2Ba2CuO6+δ has been measured as a function of both polar and azimuthal angle in high magnetic fields up to 45 T. By incorporating basal-plane anisotropy of the cyclotron frequency ωc and transport lifetime τ into the analysis of the data, we succeed in identifying the isotropic and anisotropic components of the transport scattering rate. Significantly, the form of scattering thus obtained is qualitatively different from all previous theoretical proposals