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arXiv 1002.0112cond-mat.mes-hall
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拓扑曲面上的门控一维通道

Gate-controlled one-dimensional channel on the topological surface

Takehito Yokoyama, Alexander V. Balatsky, Naoto Nagaosa

摘要:

我们研究了在栅电极下的拓扑表面上的一维沟道的形成。这些通道的能量色散几乎是线性的动量与速度敏感地取决于栅极电压的强度。能量也被限制为正或负,这取决于栅极电压的强度。因此,在门控区域附近的局域态密度具有相对于零能量的非对称结构。在存在电子-电子相互作用的情况下,相关效应可以通过栅极电压来调节。我们还建议一个隧道实验来验证这些束缚态的存在。

英文摘要:

We investigate the formation of the one-dimensional channels on the topological surface under the gate electrode. The energy dispersion of these channels is almost linear in the momentum with the velocity sensitively depending on the strength of the gate voltage. The energy is also restricted to be positive or negative depending on the strength of the gate voltage. Consequently, the local density of states near the gated region has an asymmetric structure with respect to zero energy. In the presence of the electron-electron interaction, the correlation effect can be tuned by the gate voltage. We also suggest a tunneling experiment to verify the presence of these bound states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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