2026/01/31 by Xu-Ping Yao, Chao-Kai Li, Gang Chen +1
Physics and Astronomy · #Abelian group #Advanced Condensed Matter Physics #Cluster (spacecraft) #Fractionalization #Order (exchange) #Quantum many-body systems #Surface (topology) #Topological Materials and Phenomena #Topological insulator #Topological order #Topology (electrical circuits) #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1093/pnasnexus/pgag248
published as PNAS Nexus, 2026, pgag248 · Accepted Version. Main: 10 pages, 3 figures; SM: 7 pages, 3 figures
openalex publication_date 2026/08/03 · arxiv created 2026/08/04 · openalex created_date 2026/08/04 · openalex updated_date 2026/08/04 · arxiv updated 2026/08/05
Abstract The surface states of a symmetry protected topological state can have many possibilities. Here we propose a chiral Abelian topological order on a distinct surface of a multilayer-stacked cluster Mott insulating system. The first-principle calculation and the slave-rotor mean-field theory are applied to study the surface states of the relevant material system. The angle-resolved photoemission spectroscopic measurement is further suggested to detect the anomalous surface fractionalization of the chiral Abelian topological order on the surface. The connection with real materials is further discussed. We expect our results to inspire the interest in the emergent exotic and correlation physics among the cluster Mott insulating systems and in the interplay between the two different branches of topological phases.