Interplay of chirality, topology and OAM

Chirality refers to a state in which mirror-reflection symmetry and spatial-inversion symmetry are broken. It is a fundamental aspect of nature observable across a wide range of scales and phenomena, from DNA at the microscopic level to human hands in daily life, and even to the spiral structure of galaxies on a cosmic scale. In particular, from the perspective of materials science, recent research has actively explored intriguing nanoscale phenomena involving chirality, such as Chirality-Induced Spin Selectivity (CISS) and the orbital magnetoelectric effect.

Despite the profound involvement of chirality in these phenomena, fundamental questions remain unresolved: through what mechanisms does chirality influence physical processes, and how can this inherently qualitative concept be quantitatively manifested? These challenges arise because the interpretation and expression of chirality vary depending on the scale, the phenomenon under consideration, and the specific research objective.

My research aims to achieve a quantitative understanding of chirality and its applications. Specifically, by employing first-principles calculations to investigate the physical phenomena in real materials, I seek to identify the key material parameters governing these phenomena and, simultaneously, to determine how these key parameters represent different aspects of chirality. Ultimately, my goal is to re-examine materials science through the lens of chirality, establishing a framework that elucidates its role in material properties and physical effects.

Current-induced orbital magnetisation