Nontrivial behavior of the Fermi arc in the staggered-flux ordered phase

TL;DR

This paper investigates the complex doping and temperature dependence of Fermi arcs in the staggered-flux phase of the t-J model, revealing nontrivial behaviors that differ from zero-temperature predictions, with implications for high-Tc cuprate experiments.

Contribution

It provides a detailed theoretical analysis of Fermi arc behavior in the staggered-flux phase using the U(1) slave boson theory, highlighting nontrivial doping and temperature effects.

Findings

Fermi arc length and Fermi pocket width are proportional to doping at finite temperature.

Fermi pocket area scales as doping squared at finite temperature.

Behavior differs significantly from zero-temperature predictions, suggesting experimental verification.

Abstract

The doping and temperature dependences of the Fermi arc in the staggered-flux, or the d-density wave, ordered phase of the t-J model are analyzed by the U(1) slave boson theory. Nontrivial behavior is revealed by the self-consistent calculation. At low doped and finite-temperature region, both the length of the Fermi arc and the width of the Fermi pocket are proportional to $\delta$ and the area of the Fermi pocket is proportional to $\delta^2$. This behavior is completely different from that at the zero temperature, where the area of the Fermi pocket becomes $\pi^2 \delta$. This behavior should be observed by detailed experiments of angle-resolved photoemission spectroscopy in the pseudogap phase of high-T_c cuprates if the pseudogap phase is the staggered-flux ordered phase.