Doping effects on the magnetic frustration in the honeycomb iridates

TL;DR

This study explores how doping with magnetic and nonmagnetic impurities affects magnetic frustration, ordering temperature, and electronic properties in honeycomb iridates, revealing the role of impurities in tuning magnetic behavior.

Contribution

It provides a detailed experimental analysis of impurity doping effects on magnetic frustration and electronic properties in Na2IrO3, highlighting the influence of different impurity types.

Findings

Doping alters the magnetic ordering temperature and Curie-Weiss temperature.

Impurities enhance lattice frustration and modify susceptibility and specific heat.

Magnetic and nonmagnetic impurities have distinct impacts on electronic properties.

Abstract

We investigate the doping effects of magnetic and nonmagnetic impurities injected to the honeycomb iridate sample of Na2IrO3 . Both the doping result in changing the ordering temperature as well as the Curie-Weiss temperature of the parent sample as a consequence of enhancement of the lattice frustration, screening of the Ir atoms and spin-orbit effects that reflects in the susceptibility and specific heat measurements. Our findings are corroborated by a detailed comparative study of various magnetic and nonmagnetic impurity atoms that have notable effects on different electronic properties of the doped compounds.