Quantum oscillations in the hole-doped cuprates and the confinement of spinons
Abstract
A long standing problem in the study of the under-hole-doped cuprates has been the description of the Fermi surfaces underlying the high magnetic field quantum oscillations, and their connection to the higher temperature pseudogap metal. Harrison and Sebastian (arXiv:1103.4181) proposed that the pseudogap `Fermi arcs' are reconstructed into an electron pocket by field-induced charge density wave order. But computations on such a model (Zhang and Mei, arXiv:1411.2098) show an unobserved additional oscillation frequency from a Fermi surface arising from the backsides of the hole pockets completing the Fermi arcs. We describe a transition from a fractionalized Fermi liquid (FL*) model of the pseudogap metal, to a metal with bi-directional charge density wave order without fractionalization. We show that the confinement of the fermionic spinon excitations of the FL* across this transition can eliminate the unobserved oscillation frequency.
Keywords
Cite
@article{arxiv.2405.08817,
title = {Quantum oscillations in the hole-doped cuprates and the confinement of spinons},
author = {Pietro M. Bonetti and Maine Christos and Subir Sachdev},
journal= {arXiv preprint arXiv:2405.08817},
year = {2025}
}
Comments
v5 Added acknowledgement to Moore Foundation