Sensitivity of the interlayer magnetoresistance of layered metals to intralayer anisotropies

TL;DR

This paper demonstrates that angle dependent magnetoresistance oscillations (AMRO) effectively probe intralayer anisotropies in layered metals, but are less sensitive to interlayer transport coherence, providing a complementary tool to existing spectroscopic methods.

Contribution

It reveals the sensitivity of AMRO to intralayer anisotropies and its limited sensitivity to interlayer coherence, offering new insights into layered metal properties.

Findings

AMRO are sensitive to intralayer Fermi surface anisotropies.

AMRO are not very sensitive to interlayer charge transport coherence.

Comparison with experiments on overdoped cuprates supports these conclusions.

Abstract

Many of the most interesting and technologically important electronic materials discovered in the past two decades have two common features: a layered crystal structure and strong interactions between electrons. Two of the most fundamental questions about such layered metals concern the origin of intralayer anisotropies and the coherence of interlayer charge transport. We show that angle dependent magnetoresistance oscillations (AMRO) are sensitive to anisotropies around an intralayer Fermi surface. Hence, AMRO can be a probe of intralayer anisotropies that is complementary to angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy (STM). However, AMRO are not very sensitive to the coherence of the interlayer transport. We illustrate this with comparisons to recent AMRO experiments on an overdoped cuprate.