385 citations · 1.4k across the 24 of their papers we have counts for
6 papers · 1 filter
Topological phonons in oxide perovskites controlled by light
Bo Peng, Yuchen Hu, Shuichi Murakami +2
Perovskite oxides exhibit a rich variety of structural phases hosting different physical phenomena that generate multiple technological applications. We find that topological phono…
Observation of a Chiral Wave Function in Twofold Degenerate Quadruple Weyl System BaPtGe
Haoxiang Li, Tiantian Zhang, A. Said +10
Topological states in quantum materials are defined by non-trivial topological invariants, such as the Chern number, which are properties of their bulk wave functions. A remarkable…
Crystal and Electronic Structure of GaTaSe From First-Principle Calculations
Shuai Zhang, Tiantian Zhang, Hongshan Deng +3
GaTaSe belongs to the lacunar spinel family. Its crystal structures is still a puzzle though there have been intensive studies on its novel properties, such as the Mott ins…
Theory of inversion- protected topological chiral hinge states and its applications to layered antiferromagnets
Yutaro Tanaka, Ryo Takahashi, Tiantian Zhang +1
We study positions of chiral hinge states in higher-order topological insulators (HOTIs) with inversion symmetry. First, we exhaust all possible configurations of the hinge states…
Twofold quadruple Weyl nodes in chiral cubic crystals
Tiantian Zhang, Ryo Takahashi, Chen Fang +1
Conventional Weyl nodes are twofold band crossings that carry a unit monopole charge, which can exist in condensed matter systems with the protection of translation symmetry. Uncon…
Quasiparticle Interference Evidence of the Topological Fermi Arc States in Chiral Fermionic Semimetal CoSi
Qian-Qian Yuan, Liqin Zhou, Zhi-Cheng Rao +13
Chiral fermions in solid state feature "Fermi arc" states, connecting the surface projections of the bulk chiral nodes. The surface Fermi arc is a signature of nontrivial bulk topo…