Physics & Astronomy
Seoul National University
Condensed Matter - FEW SURPRISES OF 2D MAGNETISM: From Magnon Breakdown to Magnetic Graphene
Friday, March 10, 2017
to 5:00 PM
200 Brockman Hall for Physics
6100 Main St
Houston, Texas, USA
Materials we are familiar with display amazingly beautiful phenomena. Despite the apparent complexity, however we also know that the underlying basic principles of three-dimensional materials, except for some rare cases, are in fact well accounted for by a couple of simple concepts like quasiparticles and scaling. But it works only up to a point. For example, these comfortable ideas begin to breakdown when one reduces the dimension of materials.
In this talk, I will discuss how we have discovered the breakdown of magnon, which is otherwise a stable quasiparticles of magnetic systems [1,2]. And I will also sketch some of potentials offered by a new class of two-dimensional magnetic van der Waals materials [3-5].
 Joosung Oh, et al., Phys. Rev. Lett. 111, 257202 (2013)
 Joosung Oh, et al., Nature Communications 7, 13146 (2016)
 [Viewpoint] Je-Geun Park, J. Phys. Condens. Matter 28, 301001 (2016)
 Cheng-Tai Kuo, et al., Scientific Reports 6, 20904 (2016)
 Jae-Ung Lee, et al., Nano Lett. 16, 7433 (2016)