Revealing electronic structure of quasi-one-dimensional materials

Sunghun Kim

One dimensional electron system has a great potential to emerge exotic phenomena due to strong electron correlation compared to other two- or three-dimensional system based on its limited interaction channels. Quasi-one-dimensional materials with anisotropic structure have been expected to exhibit such one-dimensional physics and thus there have been intensive studies, however, the unique hairy structure prevent the advanced study to clarify the detailed physics of those materials. In this talk, I will introduce recent studies of transition-metal trichalcogenides (TMTCs), which would be a novel platform to study quantum properties based on both strong electron correlation and topology. By virtue of the improved angle-resolved photoemission spectroscopy technique with micro-focused light, we succeeded to identify the electronic structure of transition-metal triselenides, and revealed the complexed phase diagram of the system.