Dongjin Oh

Abstract Orbital physics has become a focus of emerging research in different areas of condensed matter physics. There has been a recent surge of interest in materials exhibiting chirality, owing to its natural connection to the orbital degree of freedom. Although numerous studies have experimentally investigated orbital-induced phenomena, such as the orbital Edelstein and orbital Hall effects, disentangling the contributions of orbital degrees of freedom remains a challenge.

Abstract Electronic nematicity, the spontaneous breaking of rotational symmetry, has emerged as a key instability in correlated quantum systems. CsTi3Bi5, a kagome metal of the AV3Sb5 (A = K, Rb, Cs) family, hosts rich unconventional electronic phases, yet the origin of its nematicity remains unsettled. Here, we combine polarization-dependent angle-resolved photoemission spectroscopy with functional renormalization group calculations on a fully interacting ab initio model.