Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session R38: Monolayer Magnets II
8:00 AM–10:48 AM,
Thursday, March 7, 2019
BCEC Room: 206B
Sponsoring Units: GMAG DMP
Chair: Scott Crooker, Los Alamos National Laboratory
Abstract: R38.00009 : Magnetic interfaces of MnSe2 monolayers*
10:00 AM–10:12 AM
Anh T Ngo
(Materials Science Division, Argonne National Laboratory)
Sergio E Ulloa
In this study, the authors confirm the intrinsic ferromagnetism of the monolayer, while for thicker samples they report an interface of the MnSe2 monolayer with bulk α-MnSe(111). This phase of the material is non-magnetic, and yet the observed magnetic moments are of up to twice the value of those in the monolayer alone.
In this work, we present a detailed analysis of the interactions at this interface between the two phases, using the Heyd-Scuseria-Ernzerhof hybrid functional. We have studied the effects on the electronic and magnetic structure of both phases of the material, and the dependence on the sample thickness. We study the role that strain plays at the interface, and how it affects the magnetic moments of the structure.
 D. J. O’Hara et al., Nano Lett. 2018.
*Supported by NSF-DMR 1508325, and Ohio Supercomputer Center
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