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27 papers · 2 filters
Coulomb interaction effect in tilted Weyl fermion in two dimensions
Hiroki Isobe, Naoto Nagaosa
Weyl fermions with tilted linear dispersions characterized by several different velocities appear in some systems including the quasi-two-dimensional organic semiconductor -(BED…
Density-Matrix Renormalization Group Study of Kitaev--Heisenberg Model on a Triangular Lattice
Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki +2
We study the Kitaev--Heisenberg model on a triangular lattice by using the two-dimensional density-matrix renormalization group method. Calculating the ground-state energy and spin…
Diagnosing Topological Edge States via Entanglement Monogamy
Konstantinos Meichanetzidis, Jens Eisert, Mauro Cirio +2
Topological phases of matter possess intricate correlation patterns typically probed by entanglement entropies or entanglement spectra. In this work, we propose an alternative appr…
Universal quantum criticality in the metal-insulator transition of two-dimensional interacting Dirac electrons
Yuichi Otsuka, Seiji Yunoki, Sandro Sorella
The metal-insulator transition has been a subject of intense research since Nevil Mott has first proposed that the metallic behavior of interacting electrons could turn to the insu…
Coexistence of light and heavy surface states in a topological multi-band Kondo insulator
Robert Peters, Tsuneya Yoshida, Hirofumi Sakakibara +1
We analyze the impact of strong correlations on the surface states of a three-dimensional topological Kondo insulator. An important observation is that correlations are strongly in…
Fermi surface versus Fermi sea contributions to intrinsic anomalous and spin Hall effects of multiorbital metals in the presence of Coulomb interaction and spin-Coulomb drag
Naoya Arakawa
Anomalous Hall effect (AHE) and spin Hall effect (SHE) are fundamental phenomena, and their potential for application is great. However, we understand the interaction effects unsat…