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Observation of Acoustic Valley Vortex States and Valley-Chirality Locked Beam Splitting
Liping Ye, Chunyin Qiu, Jiuyang Lu +5
The Letter reports an experimental observation of the classical version of valley polarized states in a two-dimensional hexagonal sonic crystal, where the inversion-symmetry breaki…
Corrugation induced stacking solitons with topologically confined states in gapped bilayer graphene
Si-Yu Li, Hua Jiang, Jiao-Jiao Zhou +3
Graphene, as an atomic-thick ultrasoft membrane, almost has no resistance against out-of-plane deformations and, therefore, it is always wrinkled to a certain degree. Recently, cor…
Valley-Selective Topological Ordered States in Irradiated Bilayer Graphene
Chunlei Qu, Chuanwei Zhang, Fan Zhang
Gapless bilayer graphene is susceptible to a variety of spontaneously gapped states. As predicted by theory and observed by experiment, the ground state is however topologically tr…
Topological, Valleytronic, and Optical Properties of Monolayer PbS
Wenhui Wan, Yugui Yao, Liangfeng Sun +2
We systematically examine the topological, valleytronic, and optical properties of experimentally accessible PbS (001) few-layers, with a focus on the monolayer. With even-odd laye…
Hybrid Weyl Semimetal
Fei-Ye Li, Xi Luo, Xi Dai +3
We construct a tight-binding model realizing one pair of Weyl nodes and three distinct Weyl semimetals. In the type-I (type-II) Weyl semimetal, both nodes belong to type-I (type-II…
Topological Majorana Two-Channel Kondo Effect
Zhi-qiang Bao, Fan Zhang
A one-dimensional time-reversal-invariant topological superconductor hosts a Majorana Kramers pair at each end, where time-reversal symmetry acts as a supersymmetry that flips loca…
Energy gaps and layer polarization of integer and fractional quantum Hall states in bilayer graphene
Yanmeng Shi, Yongjin Lee, Shi Che +6
Owing to the spin, valley, and orbital symmetries, the lowest Landau level (LL) in bilayer graphene exhibits multicomponent quantum Hall ferromagnetism. Using transport spectroscop…