TSTG I: Single-Particle and Many-Body Hamiltonians and Hidden Non-local Symmetries of Trilayer Moiré Systems with and without Displacement Field

no code implementations • 11 Feb 2021 • Dumitru Călugăru, Fang Xie, Zhi-Da Song, Biao Lian, Nicolas Regnault, B. Andrei Bernevig

We derive the Hamiltonian for trilayer moir\'e systems with the Coulomb interaction projected onto the bands near the charge neutrality point.

Strongly Correlated Electrons Mesoscale and Nanoscale Physics Materials Science

A Charge-Density-Wave Topological Semimetal

no code implementations • 9 Sep 2019 • Wujun Shi, Benjamin J. Wieder, H. L. Meyerheim, Yan Sun, Yang Zhang, Yiwei Li, Lei Shen, Yanpeng Qi, Lexian Yang, Jagannath Jena, Peter Werner, Klaus Koepernik, Stuart Parkin, Yulin Chen, Claudia Felser, B. Andrei Bernevig, Zhijun Wang

We here demonstrate that the room-temperature phase of (TaSe$_4$)$_2$I is a Weyl semimetal with 24 pairs of Weyl nodes.

Band Gap Materials Science Strongly Correlated Electrons