Magnetic interactions in two-dimensional single-layer transition-metal dichalcogenides

The transition-metal dichalcogenides (TMD), a class of two-dimensional layered van der Waals materials, have attracted extensive interest because of the wide variety of physical properties that they exhibit. An important recent addition is the intrinsic ferromagnetic order found in atomic single layers of VSe₂ [1] and MnSe₂ [2] that persists above room temperature. This discovery opens up exciting opportunities [3] to study strong spin fluctuations in reduced dimensionality, as well as to engineer novel spintronic devices. In this talk, using a density-functional spin-spiral approach [4], we address the magnetic interactions in two-dimensional TMD films in the ultrathin limit.
[1] M. Bonilla et al., Nat. Natotechnol. 13, 289 (2018).
[2] D.J. O’Hare et al., Nano Lett. 18, 3125 (2018).
[3] K.S. Burch, D. Mandrus, and J.-G. Park, Nature 563, 47 (2018).
[4] T. Shishidou, D.F. Agterberg, and M. Weinert, Commun. Phys. 1, 8 (2018).