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The evolution of Weyl nodes in Ni doped thallium niobate pyrochlore TlNiNbO
Yuefang Hu, Changming Yue, Danwen Yuan +6
Magnetic Weyl semimetal (WSM) is of great importance both for fundamental physics and potential applications due to its spontaneous magnetism, robust band topology, and enhanced Be…
Twisted nodal wires and three-dimensional quantum spin Hall effect in distorted square-net compounds
Junze Deng, Dexi Shao, Jiacheng Gao +4
Recently, square-net materials have attracted lots of attention for the Dirac semimetal phase with negligible spin-orbit coupling (SOC) gap, e.g. ZrSiS/LaSbTe and CaMnSb. In th…
RTGW2020: A powerful implementation of DFT + Gutzwiller method
Shiyu Peng, Hongming Weng, Xi Dai
In the present paper, we propose an efficient numerical scheme for Gutzwiller method for multi-band Hubbard models with general onsite Coulomb interaction. Following the basic idea…
Charge instability of topological Fermi arcs in chiral crystal CoSi
Zhicheng Rao, Quanxin Hu, Shangjie Tian3 +17
Topological boundary states, emerged at the spatial boundary between topological non-trivial and trivial phases, are usually gapless, or commonly referred as metallic states. For e…
Unprotected quadratic band crossing points and quantum anomalous Hall effect in FeB2 monolayer
Dongyu Wu, Yunpeng Huang, Song Sun +6
Quadratic band crossing points (QBCPs) and quantum anomalous Hall effect (QAHE) have attracted the attention of both theoretical and experimental researchers in recent years. Based…
Extremely low-energy collective modes in a quasi-one-dimensional system
Z. X. Wei, S. Zhang, Y. L. Su +5
We have investigated the quasiparticle dynamics and collective excitations in the quasi-one-dimensional material ZrTe using ultrafast optical pump-probe spectroscopy. Our time-…