Search for effective models of stripes in the cuprates

TL;DR

This paper proposes a method to construct effective one-dimensional models of stripes in cuprate superconductors by analyzing domain walls in two-dimensional antiferromagnetic models, revealing two limiting cases.

Contribution

It introduces a novel approach to derive effective stripe models from 2D antiferromagnetic ground states and excitations, applied specifically to the t-J model with Ising anisotropy.

Findings

Identification of two limiting stripe models: 1D electron gas and holon gas with transverse fluctuations

Application of the method to the t-J model with Ising anisotropy

Insight into the nature of stripe excitations in cuprates

Abstract

We argue that effective 1D models of stripes in the cuprate superconductors can be constructed by studying ground states and elementary excitations of domain walls in 2D model antiferromagnets. This method, applied to the t-J model with Ising anisotropy, yields two such limiting cases: an ordinary 1D electron gas and a 1D gas of holons strongly coupled to transversal fluctuations of the stripe.