2 papers
cond-mat.mtrl-sci2024
Entropy-driven electron density and effective model Hamiltonian for boron systems
Chang-Chun He, Shao-Gang Xu, Yu-Jun Zhao +2
The unique electron deficiency of boron makes it challenging to determine the stable structures, leading to a wide variety of forms. In this work, we introduce a statistical model…
cond-mat.mtrl-sci2024
Intrinsic second-order topological insulators in two-dimensional polymorphic graphyne with sublattice approximation
Z. J. Chen, S. G. Xu, Z. J. Xie +2
In two dimensions, intrinsic second-order topological insulators (SOTIs) are characterized by topological corner states that emerge at the intersections of distinct edges with reve…