Possible Competing Order-Induced Fermi Arcs in Cuprate Superconductors

TL;DR

This paper explores how competing orders in cuprate superconductors can induce Fermi arcs and pseudogaps, with different behaviors in hole- and electron-doped types explained by the temperature dependence of the competing order.

Contribution

It proposes a scenario where the vanishing of competing order at a specific temperature explains the presence or absence of Fermi arcs and pseudogaps in cuprates.

Findings

Fermi arcs and pseudogaps in hole-type cuprates are explained by competing order vanishing at T*.

In electron-type cuprates, absence of these phenomena is linked to T* < Tc and different wave-vector orientations.

The model accounts for doping and temperature dependence of spectral features in cuprates.

Abstract

We investigate the scenario of competing order (CO) induced Fermi arcs and pseudogap in cuprate superconductors. For hole-type cuprates, both phenomena as a function of temperature and doping level can be accounted for if the CO vanishes at $T^{\ast}$ above the superconducting transition $T_c$ and the CO wave-vector Q is parallel to the antinodal direction. In contrast, the absence of these phenomena and the non-monotonic d-wave gap in electron-type cuprates may be attributed to $T^{\ast} < T_c$ and a CO wave-vector Q parallel to the nodal direction.