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arXiv · 2603.02932

A simple scheme to realize the Rice-Mele model in acoustic system

Tianzhi Xia·Xiying Fan·Qi Chen·Yuanlei Zhang·Zhe Li
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Abstract

The Rice-Mele (RM) model, as a paradigmatic extension of the Su-Schrieffer-Heeger (SSH) chain, plays a pivotal role in understanding topological phases and quantized adiabatic transport in one-dimensional systems. Its realization in acoustic systems, however, has been hindered by the need for simultaneous precise modulation of on-site potentials and couplings. In this work, we demonstrate a method to linearly tune on-site potentials and couplings, thus realizing an acoustic Rice-Mele model. During parameter evolution, the system exhibits a Thouless pump, with the acoustic field distribution adiabatically shifting from the left edge through the bulk to the right edge, fully consistent with tight-binding model predictions. Moreover, the strategy of leveraging geometric parameters to linearly and precisely control on-site potentials and couplings is highly effective and universal for designing acoustic metamaterials, and it can be extended to other classical wave systems.

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Tianzhi Xia, Xiying Fan, Qi Chen, Yuanlei Zhang, Zhe Li. 2026-03-03. A simple scheme to realize the Rice-Mele model in acoustic system. https://doi.org/10.1088/1674-1056%2Fae3473

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