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Showing 1–7 of 7 results
Advanced filters: Author: Zengji Yue Clear advanced filters

  • Zengji Yue explains how to use ionic gating for ion intercalation in layered materials.

    • Zengji Yue
    Research Highlights
    Nature Reviews Physics
    Volume: 3, P: 306

  • Holograms generally need to be as thick as a wavelength of light to introduce the necessary optical phase shifts that create true three-dimensional images. Here, Yueet al. use a high-index topological insulator material to create a resonant optical cavity and thin holograms to the nanometre scale.

    • Zengji Yue
    • Gaolei Xue
    • Min Gu
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-5

  • Multiplexed vortex light beams are promising for optical communications, but efficient mode sorting is so far limited to bulk optics. Here the authors develop a scalable vortex beam sorter that uses a plasmonic topological insulator structure to spatially separate the modes to resolve them on a standard CMOS detector.

    • Zengji Yue
    • Haoran Ren
    • Min Gu
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-7

  • Topological edge states offer the prospect of dissipationless transport for nanoelectronics, but a precise method to spatially engineer such nanoscale conducting channels is still lacking. Here, the authors demonstrate patterning of topological boundary states in Sb2Te3 using a focused ion beam to create amorphous, topologically trivial regions.

    • Abdulhakim Bake
    • Qi Zhang
    • David Cortie
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8

  • (Left, above) Schematic diagram describing the process of the Au implantation into the Dirac semimetal (DSM) Bi0.96Sb0.04. (Left, below) Positive longitudinal magnetic resistance (LMR) is observed in the crystal without ion implantation, but negative LMR behavior becomes apparent for ϕG ≥ 3.2 × 1016 Au cm−2 (≡ ϕC, critical implant fluence), and reaches a maximum for ϕG = 8.0 × 1016 Au cm−2. (Middle) Quantum oscillation parameters for the β Fermi pockets showing abrupt changes near ϕC, typical of phase transition. No such behavior is observed for the α Fermi pockets. (Right) A drastic change in the Raman spectra is observed for ϕG ≥ ϕC. In particular, a new peak appears at 85.7 cm−1, between the well-known Raman modes, suggesting that the inversion symmetry breaking in the crystal occurred for ϕG ≥ ϕC, resulting in the transition of the DSM to a Weyl semimetal.

    • Won Jun Lee
    • Yusuff Adeyemi Salawu
    • Suk-Ho Choi
    ResearchOpen Access
    NPG Asia Materials
    Volume: 14, P: 1-8