A Systematic Study of TMO (TM = V, Cr, Mn, and Fe; = 3 and 6) Clusters Embedded in a PtS Monolayer

Overview

Journal Nanoscale Adv

Publisher Royal Society of Chemistry

Specialty Biotechnology

Date 2024 Sep 23

PMID 39309517

Authors

Nguyen Thanh Tien

J Guerrero-Sanchez

D M Hoat

Affiliations

Soon will be listed here.

Abstract

Doping-based magnetism engineering is an effective approach to synthesize new multifunctional two-dimensional (2D) materials from their non-magnetic counterparts. In this work, doping with TMO clusters (TM = V, Cr, Mn, and Fe; = 3 and 6) is proposed to induce feature-rich electronic and magnetic properties in a PtS monolayer. The pristine monolayer is a non-magnetic semiconductor with an indirect energy gap of 1.81 (2.67) eV as obtained from PBE(HSE06)-based calculations. PtS-type multivacancies magnetize significantly the monolayer, inducing the emergence of half-metallicity. In this case, a total magnetic moment of 1.90 μ is obtained and magnetic properties are produced mainly by atoms around the vacancy sites. Meanwhile, the PtS monolayer is metallized by creating PtS-type multivacancies without magnetization. Depending on the type of TMO cluster, either a feature-rich diluted magnetic semiconductor or half-metallic nature is induced, which is regulated mainly by the incorporated clusters. Except for the FeO cluster, TM atoms and O atoms exhibit an antiparallel spin orientation, resulting in total magnetic moments between 1.00 and 4.00 μ. Meanwhile, the parallel spin ordering gives a large total magnetic moment of 5.99 μ for the FeO-doped monolayer. Furthermore, Bader charge analysis indicates that all the clusters attract charge from the host monolayer that is mainly due to the electronegative O atoms. Our results may introduce cluster doping as an efficient way to create new spintronic 2D materials from a non-magnetic PtS monolayer.

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