Evidence for Fermi surface reconstruction in the static stripe phase of La$_{1.8-x}$Eu$_{0.2}$Sr$_x$CuO$_{4}$, $x=1/8$

TL;DR

This study uses photoemission to investigate the Fermi surface in Eu-doped LSCO at 1/8 doping, revealing evidence of Fermi surface reconstruction linked to static stripe order, which aligns with theoretical expectations.

Contribution

It provides direct experimental evidence of Fermi surface reconstruction in the stripe-ordered phase of Eu-doped LSCO at 1/8 doping, advancing understanding of stripe effects in cuprates.

Findings

Fermi surface shows deviations consistent with stripe-induced reconstruction

Evidence supports the link between static stripe order and Fermi surface topology changes

Results align with theoretical models of FS scattering on stripe order

Abstract

We present a photoemission study of La$_{0.8-x}$Eu$_{0.2}$Sr$_x$CuO$_{4}$ with doping level $x$=1/8, where the charge carriers are expected to order forming static stripes. Though the local probes in direct space seem to be consistent with this idea, there has been little evidence found for such ordering in quasiparticle dispersions. We show that the Fermi surface topology of the 1/8 compound develops notable deviations from that observed for La$_{2- x}$Sr$_x$CuO$_{4}$ in a way consistent with the FS reconstruction expected for the scattering on the antiphase stripe order.