Coherent detection of the oscillating acoustoelectric effect in graphene
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866913722983776256 |
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| author | Mou, Yicheng Wang, Jiayu Chen, Haonan Xia, Yingchao Li, Hailong Yan, Qing Jiang, Xue Wu, Yijia Shi, Wu Jiang, Hua Xie, X. C. Zhang, Cheng |
| author_facet | Mou, Yicheng Wang, Jiayu Chen, Haonan Xia, Yingchao Li, Hailong Yan, Qing Jiang, Xue Wu, Yijia Shi, Wu Jiang, Hua Xie, X. C. Zhang, Cheng |
| contents | In recent years, surface acoustic waves (SAWs) have emerged as a novel technique for generating quasiparticle transport and band modulation in condensed matter systems. SAWs interact with adjacent materials through piezoelectric and strain fields, dragging carriers in the direction of wave propagation. Most studies on the acoustoelectric effect have focused on the collective directional motion of carriers, which generates a steady electric potential difference, while the oscillating component from dynamic spatial charge modulation has remained challenging to probe. In this work, we report the coherent detection of oscillating acoustoelectric effect in graphene. This is achieved through the coherent rectification of spatial-temporal charge oscillation with electromagnetic waves emitted by interdigital transducers. We systematically investigate the frequency and gate dependence of rectified signals and quantitatively probe the carrier redistribution dynamics driven by SAWs. The observation of oscillating acoustoelectric effect provides direct access to the dynamic spatial charge modulation induced by SAWs through transport experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_09465 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Coherent detection of the oscillating acoustoelectric effect in graphene Mou, Yicheng Wang, Jiayu Chen, Haonan Xia, Yingchao Li, Hailong Yan, Qing Jiang, Xue Wu, Yijia Shi, Wu Jiang, Hua Xie, X. C. Zhang, Cheng Mesoscale and Nanoscale Physics Materials Science In recent years, surface acoustic waves (SAWs) have emerged as a novel technique for generating quasiparticle transport and band modulation in condensed matter systems. SAWs interact with adjacent materials through piezoelectric and strain fields, dragging carriers in the direction of wave propagation. Most studies on the acoustoelectric effect have focused on the collective directional motion of carriers, which generates a steady electric potential difference, while the oscillating component from dynamic spatial charge modulation has remained challenging to probe. In this work, we report the coherent detection of oscillating acoustoelectric effect in graphene. This is achieved through the coherent rectification of spatial-temporal charge oscillation with electromagnetic waves emitted by interdigital transducers. We systematically investigate the frequency and gate dependence of rectified signals and quantitatively probe the carrier redistribution dynamics driven by SAWs. The observation of oscillating acoustoelectric effect provides direct access to the dynamic spatial charge modulation induced by SAWs through transport experiments. |
| title | Coherent detection of the oscillating acoustoelectric effect in graphene |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2502.09465 |