2016/05/31 by Marcin M. Wysokiński, Marcin M. Wysokinski, Michele Fabrizio
Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Band gap #Closure (psychology) #Condensed matter physics #Hamiltonian (control theory) #Impurity #Kondo effect #Kondo insulator #Lattice (music) #Mathematics #Physics #Quantum many-body systems #Quantum mechanics #Semiconductor #Topological Materials and Phenomena #Topology (electrical circuits) #Wave function #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.94.121102
published as Phys. Rev. B 94, 121102(R) (2016) · Supplemental Material included
arxiv created 2016/09/01 · openalex publication_date 2016/09/01 · arxiv updated 2016/10/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show that the inclusion of nonlocal correlation effects in a variational wave function for the ground state of a topological Anderson lattice Hamiltonian is capable of describing both topologically trivial insulating phases and nontrivial ones characterized by an indirect gap, as well as its closure at the transition into a metallic phase. The method, though applied to an oversimplified model, thus captures the metallic and insulating states that are indeed observed in a variety of Kondo semiconductors, while accounting for topologically nontrivial band structures.