Document Type

Article

Original Publication Date

2009

Journal/Book/Conference Title

The Journal of Chemical Physics

Volume

130

Issue

16

DOI of Original Publication

10.1063/1.3123808

Comments

Originally published at http://dx.doi.org/10.1063/1.3123808

Date of Submission

October 2015

Abstract

First principles studies on the geometry, electronic structure, and magnetic properties of neutral and anionic Fe2Sin, Co2Sin, and Ni2Sin (1≤n≤8) clusters have been carried out within a gradient corrected density functional framework. It is shown that these clusters display a variety of magnetic species with varying magnetic moment and different magnetic coupling between the two transition metal atoms. While Fe2Sin clusters are mostly ferromagnetic with large moments, Ni2Sin clusters are mostly nonmagnetic. Our studies of the variation of the binding energy upon addition of successive Si atoms and the gap between the highest occupied molecular orbital and the lowest unoccupied molecular orbital indicate that many of the motifs are quite stable and could be suitable as building blocks for generating magnetic cluster assembled materials. The studies also reveal motifs that could be used in molecular electronic devices to generate spin polarized currents or large magnetoresistance.

Rights

Robles, R., Khanna, S. N. Stable T2Sin (T=Fe,Co,Ni,1≤n≤8) cluster motifs. The Journal of Chemical Physics 130, 164313 (2009). Copyright © 2009 AIP Publishing LLC.

Is Part Of

VCU Physics Publications

Included in

Physics Commons

Share

COinS