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Updated: Jan 8, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

ツイスト誘起全フラットバンド高次音響トポロジカル絶縁体

Min-Hang Ling¹, Peng Wu¹, Yu-Gui Peng¹

¹School of Physics and Innovation Institute, Huazhong University of Science and Technology, Wuhan, China.

Advanced materials (Deerfield Beach, Fla.)

|December 24, 2025

Abstract:

Twisted Moiré superlattices (TMSs) exhibit unique geometric periodicity and interlayer Bragg scattering effects, which have been widely exploited for flat-band engineering. However, to date, no report has directly addressed the mechanism of achieving all-flat-band topology with the intrinsic eigenmodes of Moiré periodicity. In this work, by introducing periodic strong localized resonances into the superlattices, a novel acoustic flat-band higher-order topological insulator is proposed. Based on the standing-wave effect of multipolar Mie resonances, varied-frequency edge states and high-quality (high-Q) corner states are observed in the topological all-flat-bandgaps. More interestingly, owing to the operational simplicity of acoustic TMS, it can be readily stacked into a 3D configuration, yielding out-of-phase topological hinge states. This study unveils a simple strategy to construct acoustic all-flat-band topological insulators, providing new potential for applications such as energy harvesting and sensing.

キーワード:

ミー共鳴フラットバンドトポロジートポロジカル絶縁体ツイストモアレ格子

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Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

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High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

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Published on: October 31, 2019

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