Effect of Stripes on Electronic States in Underdoped La_{2-x}Sr_xCuO_4

TL;DR

This study uses a microscopic model to analyze how vertical charge stripes influence the electronic states in underdoped La_{2-x}Sr_xCuO_4, explaining various experimental observations and highlighting the importance of stripes.

Contribution

It introduces a detailed microscopic model with vertical charge stripes to explain electronic properties in underdoped LSCO, providing insights into stripe effects.

Findings

Charge stripes explain experimental features in ARPES, neutron scattering, and optical conductivity.

Stripes suppress d-channel pair correlations.

Stripes play a crucial role in the electronic behavior of LSCO.

Abstract

We investigate the electronic states of underdoped La_{2-x}Sr_xCuO_4 (LSCO) by using a microscopic model, i.e., t-t'-t''-J model, containing vertical charge stripes. The numerically exact diagonalization calculation on small clusters shows the consistent explanation of the physical properties in the angle-resolved photoemission, neutron magnetic scattering and optical conductivity experiments such as the antiphase domain and quasi-one-dimensional charge transport. The pair correlation function of the d-channel is suppressed by the stripes. These results demonstrate a crucial role of the stripes in LSCO