Interpreting angle-dependent magnetoresistance (ADMR) measurements in pseudogapped cuprates

We provide a model for thinking about ADMR in the small magnetic field limit and discuss what recent measurements of ADMR near the pseudogap critical point of Nd-LSCO are actually able to deduce about the Fermi surface. We further include the quasiparticle residue in these calculations and use our model to understand why its inclusion doesn't qualitatively alter the predicted ADMR for the spin density wave reconstructed Fermi surface. We attempt to propose a Fermi surface where the inclusion of the quasiparticle residue will alter the qualitative form of ADMR.