Electron Dynamics Reconstruction and Nontrivial Transport by Acoustic Waves
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866911543667458048 |
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| author | Zhou, Zi-Qian Zhang, Zhi-Fan Xiao, Cong Jiang, Hua Xie, X. C. |
| author_facet | Zhou, Zi-Qian Zhang, Zhi-Fan Xiao, Cong Jiang, Hua Xie, X. C. |
| contents | Surface acoustic waves (SAWs) become a popular driving source in modern condensed matter physics, but most existing theories simplify them as electric fields and ignore the non-uniform Brillouin zone folding effect. We develop a semiclassical framework and reconstruct the electron dynamics by treating SAW as a quasi-periodic potential modulating electronic momentum distribution. This framework naturally explains the experimentally observed DC drag current and predicts acousto-electric Hall effect. The theory further reveals various SAW-driven transport phenomena, emerging anomalous Hall, thermal Hall, and Nernst effects within time-reversal symmetric systems. Illustrated in bilayer graphene and $\mathrm{MX_2}$ (M = Mo, W; X = S, Se, Te), the angular-dependent acousto-electric Hall effect provides an experimental probe for Berry curvature distribution. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_24102 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Electron Dynamics Reconstruction and Nontrivial Transport by Acoustic Waves Zhou, Zi-Qian Zhang, Zhi-Fan Xiao, Cong Jiang, Hua Xie, X. C. Mesoscale and Nanoscale Physics Other Condensed Matter Surface acoustic waves (SAWs) become a popular driving source in modern condensed matter physics, but most existing theories simplify them as electric fields and ignore the non-uniform Brillouin zone folding effect. We develop a semiclassical framework and reconstruct the electron dynamics by treating SAW as a quasi-periodic potential modulating electronic momentum distribution. This framework naturally explains the experimentally observed DC drag current and predicts acousto-electric Hall effect. The theory further reveals various SAW-driven transport phenomena, emerging anomalous Hall, thermal Hall, and Nernst effects within time-reversal symmetric systems. Illustrated in bilayer graphene and $\mathrm{MX_2}$ (M = Mo, W; X = S, Se, Te), the angular-dependent acousto-electric Hall effect provides an experimental probe for Berry curvature distribution. |
| title | Electron Dynamics Reconstruction and Nontrivial Transport by Acoustic Waves |
| topic | Mesoscale and Nanoscale Physics Other Condensed Matter |
| url | https://arxiv.org/abs/2603.24102 |