Synthesis and properties of monolayer MnSe with unusual atomic structure and antiferromagnetic ordering
|Author:||Aapro, Markus1; Huda, Nurul1; Karthikeyan, Jeyakumar2;|
1Department of Applied Physics, Aalto University, 00076 Aalto, Finland
2Department of Applied Physics, Aalto University, 00076 Aalto, Finland; Rajiv Gandhi Institute of Petroleum Technology, Jais, Amethi 229304 Uttar Pradesh, India
3Microelectronics Research Unit, University of Oulu, 90014 Oulu, Finland
|Online Access:||PDF Full Text (PDF, 8.1 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2021100449272
American Chemical Society,
|Publish Date:|| 2021-10-04
Transition metal chalcogenides (TMCs) are a large family of 2D materials that are currently attracting intense interest. TMCs with 3d transition metals provide opportunities for introducing magnetism and strong correlations into the material with manganese standing out as a particularly attractive option due to its large magnetic moment. Here we report on the successful synthesis of monolayer manganese selenide on a NbSe2 substrate. Using scanning tunneling microscopy and spectroscopy experiments and global structure prediction calculations at the density functional theory level, we identify the atomic structure and magnetic and electronic properties of the layered Mn2Se2 phase. The structure is similar to the layered bulk phase of CuI or a buckled bilayer of h-BN. Interestingly, our results suggest that the monolayer is antiferromagnetic, but with an unusual out-of-plane ordering that results in two ferromagnetic planes.
|Pages:||13794 - 13802|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
114 Physical sciences
We thank J. Sainio for help and advice on the XPS data analysis. We acknowledge funding from the Academy of Finland (Academy Research Fellow Funding No. 311058, Academy Professor Funding Nos. 318995 and 320555, and Academy Postdoctoral Researcher Funding No. 309975) and the European Research Council (Grant ERC-2017-AdG No. 788185 “Artificial Designer Materials”). We gratefully acknowledge CSCIT Center for Science, Finland and the Aalto ScienceIT project for generous computational resources. This research made use of the Aalto Nanomicroscopy Center (Aalto NMC) facilities.
|Academy of Finland Grant Number:||
311058 (Academy of Finland Funding decision)
318995 (Academy of Finland Funding decision)
320555 (Academy of Finland Funding decision)
309975 (Academy of Finland Funding decision)
© 2021 The Authors. Published by American Chemical Society. Published under the CC-BY 4.0 License.