TY - JOUR AU - 천상모 DA - 2020/09 PY - 2020 UR - https://journals.aps.org/prb/abstract/10.1103/PhysRevB.102.121408 UR - https://repository.hanyang.ac.kr/handle/20.500.11754/170512 AB - Chirality manifests in various forms in nature. However, there is no evidence of the chirality in one-dimensional charge density wave (CDW) systems. Here, we have explored the chirality among quasi-one-dimensional CDW ground states with the aid of scanning tunneling microscopy, symmetry analysis, and density functional theory calculations. We discovered three distinct chiralities emerging in the form of two-dimensional chiral stacking orders composed of degenerate CDW ground states: right-, left-, and nonchiral stacking orders. Such chiral stacking orders correspond to newly introduced chiral winding numbers. Furthermore, we observed that these chiral stacking orders are intertwined with chiral vortices and chiral domain walls, which play a crucial role in engineering the chiral stacking orders. Our findings suggest that the unexpected chiral stacking orders can open a way to investigate the chirality in CDW systems, which can lead to diverse phenomena such as circular dichroism depending on chirality. PB - AMER PHYSICAL SOC KW - SOLITONS KW - DYNAMICS TI - Two-dimensional chiral stacking orders in quasi-one-dimensional charge density waves IS - 12 VL - 102 DO - 10.1103/PhysRevB.102.121408 T2 - PHYSICAL REVIEW B ER -