Magneto-oscillations in Underdoped Cuprates

TL;DR

This paper proposes an alternative explanation for magneto-oscillations in underdoped cuprates, aligning with ARPES findings of Fermi arcs, and suggests experiments to differentiate between competing theories.

Contribution

It challenges the conventional interpretation requiring translational symmetry breaking and offers a model consistent with ARPES data showing Fermi arcs in underdoped cuprates.

Findings

Magneto-oscillations can be explained without translational symmetry breaking.

Fermi surface in underdoped cuprates may consist of shrinking arcs.

Infrared absorption experiments could distinguish between models.

Abstract

The conventional interpretation of the recent magneto-oscillation experiments in underdoped Cuprates, requires that there be a state of altered translational symmetry in the pseudogap state which is not supported by structural and Angle Resolved Photoemission Spectroscopy (ARPES) experiments. I show here that the observed oscillations may be reconciled with the conclusion arrived in ARPES experiments that the fermi-surface, suitably defined, has the shape of four arcs which shrink to four points as $T \to 0$. Experiments, including infrared absorption in a magnetic field, are suggested to distinguish between such a state from that obtained by the conventional interpretation of the magneto-oscillations.