Issue 21, 2013

Half-metallicity of a kagome spin lattice: the case of a manganese bis-dithiolene monolayer

Abstract

The spin ordering in kagome lattices has long been studied in the search for real materials with a spin-liquid ground state. The synthesis of a nickel bis-dichiolene complex (Ni3C12S12) nanosheet (T. Kambe et al., J. Am. Chem. Soc., 2013, 135, 2462) paved a way for realizing real two-dimensional kagome lattices. Using first-principles calculations, we predicted that a ferromagnetic kagome spin lattice with S = 3/2 on lattice vertices can be achieved in an Mn3C12S12 monolayer formed by substituting Ni with Mn atoms in nonmagnetic Ni3C12S12. Monte Carlo simulations on the basis of the Ising model suggest that it has a Curie temperature of about 212 K. A ferromagnetic Mn3C12S12 monolayer is half metallic with high carrier mobility in one spin channel and a band gap of 1.54 eV in another spin channel, which is quite promising for spintronic device applications. Additionally, a small band gap opens up at the Dirac point of the kagome bands due to the spin–orbital coupling effects, which may be implementable for achieving a quantum anomalous Hall effect.

Graphical abstract: Half-metallicity of a kagome spin lattice: the case of a manganese bis-dithiolene monolayer

Article information

Article type
Paper
Submitted
28 Jun 2013
Accepted
12 Aug 2013
First published
14 Aug 2013

Nanoscale, 2013,5, 10404-10408

Half-metallicity of a kagome spin lattice: the case of a manganese bis-dithiolene monolayer

M. Zhao, A. Wang and X. Zhang, Nanoscale, 2013, 5, 10404 DOI: 10.1039/C3NR03323F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements