Special Colloquium
Department of Physics, NCU
Investigation of Electronic Transitions, Charge Density Waves, and Coherent Coupling in Transition Metal Dichalcogenides
Speaker
Dr. 林孟凱 (Meng-Kai Lin)
University of Illinois at Urbana-Champaign, USA
Date 2020.12.30 (Wed)
Time 10:30am
Place S4-625
Abstract
Research on single layers and few layers of materials has demonstrated abundant cases of novel properties, including lattice and charge distortions, magnetic ordering, topological electronic transitions, superconductivity, etc., that are drastically different from the corresponding bulk cases. Transition metal dichalcogenides (TMDCs), which form a huge group of van der Waals layered systems, are excellent parent materials for the study in reduced dimension. In this talk, I will briefly introduce the principle of the major tool, angle-resolved photoemission spectroscopy (ARPES), used in my research and present my recent works on few-layer TMDCs and their heterostructures, specifically, for substrate mediated charge instability in TiTe2 single layer, and coherent coupling in TiTe2/TiSe2 Moiré bilayer.