Angle-dependent magnetoresistance as a probe of Fermi surface warping in HgBa$_2$CuO$_{4+\delta}$

TL;DR

This paper presents a model for angle-dependent magnetoresistance in underdoped HgBa$_2$CuO$_{4+eta}$, enabling the identification of Fermi surface warping and reconstructing order symmetry.

Contribution

It introduces a novel model linking magnetoresistance measurements to Fermi surface warping, aiding in understanding the reconstructed electronic structure.

Findings

Model distinguishes Fermi surface warping types

Provides experimental conditions for testing the model

Constrains symmetry of the reconstructing order

Abstract

We develop a model for the angle-dependent magnetoresistance of HgBa$_2$CuO$_{4+\delta}$ in the underdoped regime where the Fermi surface is thought to be reconstructed by an ordered state such as a charge density wave. We show that such measurements can be employed to unambiguously distinguish the form of the Fermi surface's interlayer warping, placing severe contraints on the symmetry and nature of the reconstructing order. We describe experimentally accessible conditions in which our calculations can be put to the test.