Fermi Surface of Bi2212: a Systematic Revisit and Identification of Almost Perfectly Nested Fermi Surface Segments

TL;DR

This study systematically investigates the Fermi surface of Bi2212 using various photon energies, resolving previous conflicts and revealing nearly perfectly nested segments similar to those in related cuprate systems.

Contribution

It provides a comprehensive analysis of Bi2212's Fermi surface, identifying a previously overlooked nesting feature that aligns with similar phenomena in related materials.

Findings

Identification of almost perfectly nested Fermi surface segments

Reconciliation of conflicting previous reports

Similarity to Fermi surface features in related cuprates

Abstract

The Fermi surface of the Bi2212 system is systematically studied using a variety of photon energies. In addition to reconciling the conflicting reports on the Fermi surface of this important material, we identify almost perfectly nested Fermi surface segments parallel to the $(1,0)$ or $(0,1)$ direction. This general yet long overlooked feature of the Fermi surface is intriguingly similar to the Fermi surface of the $La_{1.48}Nd_{0.4}Sr_{0.12}CuO_4$ system.