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arXiv 1205.6325cond-mat.mes-hall
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电子学的变革:电子有效质量的剪裁

Transformation Electronics: Tailoring Electron's Effective Mass

Mario G. Silveirinha, Nader Engheta

摘要:

集成电路的速度最终受到电子或空穴的迁移率的限制,这取决于半导体中的有效质量。在这里,建立在与电磁超材料和变换光学的类比,我们描述了一个新的传输制度,在半导体超晶格的特征在于极端各向异性的有效质量和低的固有电阻的运动-零有效质量-沿一些优选的方向的电子运动。我们从理论上证明,这种制度可能允许超快,极强的电子响应,和显着高的电导率,其中,值得注意的是,可能是弱依赖于在低温下的温度。这些想法可能为更快的电子设备和探测器以及在红外区域具有强电响应的新功能材料铺平道路。

英文摘要:

The speed of integrated circuits is ultimately limited by the mobility of electrons or holes, which depend on the effective mass in a semiconductor. Here, building on an analogy with electromagnetic metamaterials and transformation optics, we describe a new transport regime in a semiconductor superlattice characterized by extreme anisotropy of the effective mass and a low intrinsic resistance to movement - with zero effective mass - along some preferred direction of electron motion. We theoretically demonstrate that such regime may permit an ultra fast, extremely strong electron response, and significantly high conductivity, which, notably may be weakly dependent on the temperature at low temperatures. These ideas may pave the way for faster electronic devices and detectors and new functional materials with a strong electrical response in the infrared regime.

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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