Optical properties of (Pr,Ce)2CuO4

TL;DR

This study investigates the optical conductivity of electron-doped Pr{1-x}Ce{x}CuO(4), revealing a doping-dependent partial gap likely related to spin density wave phenomena, with implications for understanding its electronic phase diagram.

Contribution

It provides new insights into the doping evolution of optical properties and the nature of the partial gap in (Pr,Ce)2CuO4, linking it to spin density wave behavior.

Findings

Spectral weight transfer indicates a doping-dependent gap.

A Drude peak persists at all temperatures.

The gap vanishes near the antiferromagnetic phase boundary.

Abstract

We studied the optical conductivity of electron doped Pr{1-x)Ce(x)CuO(4) from the underdoped to the overdoped regime. The observation of low to high frequency spectral weight transfer reveals the presence of a gap, except in the overdoped regime. A Drude peak at all temperatures shows the partial nature of this gap. The close proximity of the doping at which the gap vanishes to the antiferromagnetic phase boundary leads us to assign this partial gap to a spin density wave.