Manifestations of the Charged Stripes in the Magnetoresistance of Heavily Underdoped YBa_2Cu_3O_{6+x}

TL;DR

This study investigates the magnetoresistance in heavily underdoped YBa_2Cu_3O_{6+x}, revealing anisotropic behavior and persistent resistivity anisotropy linked to stripe order, suggesting a topological stripe arrangement influences electronic properties.

Contribution

It provides evidence for field-induced topological ordering of stripes in underdoped cuprates, connecting magnetoresistance features to stripe phenomena.

Findings

In-plane MR shows d-wave-like anisotropy.

Persistent resistivity anisotropy appears below 20-25 K.

Magnetoresistance linked to field-induced stripe ordering.

Abstract

We present a study of the in-plane and out-of-plane magnetoresistance (MR) in heavily-underdoped, antiferromagnetic YBa_2Cu_3O_{6+x}, which reveals a variety of striking features. The in-plane MR demonstrates a "d-wave"-like anisotropy upon rotating the magnetic field H within the ab plane. With decreasing temperature below 20-25 K the system acquires memory: exposing a crystal to the magnetic field results in a persistent in-plane resistivity anisotropy. The overall features can be explained by assuming that the CuO_2 planes contain a developed array of stripes accommodating the doped holes, and that the MR is associated with the field-induced topological ordering of the stripes.