Su-Schrieffer-Heeger晶格中Wannier-Stark梯的反共振
Antiresonances of Wannier-Stark ladders in Su-Schrieffer-Heeger lattices
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中文总结 AI 辅助
该研究在含均匀电场的SSH链量子输运中,采用带非平凡匹配条件的全局矩阵方法,发现WSL反共振对应势入射边界指数局域态,为跨尺度WSLs识别提供了统一框架。
中文摘要 AI 辅助
我们证明一维Su-Schrieffer-Heeger(SSH)链中的Wannier-Stark梯(WSLs)会在电子传输中表现为反共振特征。我们研究了在周期性势分布加上均匀电场存在下SSH链中的量子输运,通过采用具有非平凡匹配条件的全局矩阵方法,发现这些WSL反共振对应于指数局域在势入射边界的态。这些发现为识别不同尺度的WSLs提供了稳健、统一的框架,涵盖从反式聚乙炔中的电子输运到声子晶体和表面水波中的经典波类似物。
英文摘要
We demonstrate that Wannier-Stark ladders (WSLs) in one-dimensional Su-Schrieffer-Heeger (SSH) chains manifest as antiresonance signatures in the electron transmission. We study the quantum transport in the SSH chain in the presence of a periodic potential profile plus a uniform electric field. By employing the global matrix method with non-trivial matching conditions, we find that these WSL antiresonances correspond to states that are exponentially localized at the potential's incident boundary. These findings provide a robust, unified framework for identifying WSLs across diverse scales, ranging from electronic transport in trans-polyacetylene to classical-wave analogs in phononic crystals and surface water waves.
发表机构
- Instituto de Física, Universidad Nacional Autónoma de México(墨西哥国立自治大学物理研究所)
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