Symposium QN02—Defects, Electronic and Magnetic Properties in Advanced 2D Materials Beyond Graphene
Two-dimensional (2D) layered materials such as transition-metal dichalcogenides, Mxenes, BN, topological insulators, and phosphorene have received a great deal of research interest due to their outstanding optoelectronic and catalytic properties. However, further progress on these materials is limited by unwanted introduction of defects during the growth process. That poses a major challenge in reproducing these properties widely. Particularly, this problem gets severe when researchers grow these materials on large scale. If we were to use these materials beyond CMOS technology, it is necessary to identify and elucidate the influence of these defects on the fundamental physical properties and potential applications. Some of these defects can be detrimental for next generation optoelectronic applications. On the other hand, some of the defects can be exploited to induce and enhance functionalities such as improved catalysis and magnetism. Specifically, if the defects contain unpaired electron spins, they also can exhibit magnetic properties. Though not extensively explored, a sizeable amount of work was done in the community in exploring the magnetic properties of 2D materials.
This symposium will focus on the atomic identification of defects present in the pristine and processed (doping with transitional metals, alloying, intercalation, and upon high-energy ion radiation) 2D layered materials using a wide range of experimental and computational tools. The principal goal of this symposium is to bring together both experimentalists and theorists practicing the physics, chemistry, and materials science and engineering aspects of these materials while investigating the defects, electronic and the magnetic properties. This symposium will cover a wide variety of experimental probes such as electron spin resonance spectroscopy, scanning tunneling microscopy, transmission electron microscopy, x-ray photo absorption spectroscopy, operando experimental methodologies, and DFT and ab initio computational tools. In addition, this symposium will present the latest advances on the magnetic properties of 2D materials and devices using conventional magnetometry, x-ray magnetic circular dichroism, and magneto optical Kerr effect. With a mix of young scientists and established leaders in the field as invited speakers, the symposium will capture the new and most impactful developments and simultaneously, enable researchers to receive a deeper perception of this rich field and outline the grand challenges and opportunities. This symposium is expected to generate one of the largest audiences in the Spring meeting, giving young scholars greater opportunity to advance their research in the rapidly growing field of research.