Chracterization of MoS2 Magnetic States Using Density-Functional Theory
Journal article, 2009

It is known that the edges of a two-dimensional slab of insulating MoS2 exhibit one-dimensional metallic edge states, the so-called “brim states.” Here, we find from density-functional theory calculations that several edge structures, which are relevant for the hydrodesulfurization process, are magnetic. The magnetism is an edge phenomenon associated with certain metallic edge states. Interestingly, we find that among the two low-index edges, only the S edge displays magnetism under hydrodesulfurization conditions. In addition, the implications of this on the catalytic activity are investigated. Despite large changes in the magnetic moments, a small influence on the adsorption energies is observed. This has implications on the suitability of magnetic measurements for monitoring the catalytic properties.

Author

Aleksandra Vojvodic

Chalmers, Applied Physics, Materials and Surface Theory

Berit Hinnemann

Jens K. Norskov

Physical Review B - Condensed Matter and Materials Physics

24699950 (ISSN) 24699969 (eISSN)

Vol. 80 125416-

Subject Categories

Condensed Matter Physics

More information

Created

10/6/2017