Magnetic Order in NbS Nanoribbons

F.GULLER; VERONICA VILDOSOLA; ANA MARÍA LLOIS

IEEE TRANSACTIONS ON MAGNETICS

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Lugar: New York; Año: 2013 vol. 49 p. 4538 - 4541

0018-9464

Transition metal dichalcogenides are well known for their laminar structure, similar to that of graphite. The bulk structure of manyof them has been the subject of several studies during the last 30 years, due to their many potential technological applications. In theyear 2004, Novoselov et al. achieved to isolate not only graphene but layers of other bidimensional crystals as well, among them somedichalcogenides [1]. Several metallic dichalcogenides exhibit strong Fermi surface nesting and charge density wave phases. In this contribution we study the magnetic order in NbS nanoribbons, a metallic dichalcogenide, via ab initio calculations. We investigate themagnetization of the systems for several initial spin configurations as a function of ribbon width, comparing with results obtained forribbons of a non metallic dichalcogenide,MoS . Atoms in the NbS ribbons show a wave-like pattern in their magnetic moments, goingfrom one edge to the other. The physical origin of this magnetic behavior is discussed.