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首页> 外文期刊>Japanese journal of applied physics >Suspended Quantum Dot Fabrication on a Heavily Doped Silicon Nanowire by Suppressing Unintentional Quantum Dot Formation
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Suspended Quantum Dot Fabrication on a Heavily Doped Silicon Nanowire by Suppressing Unintentional Quantum Dot Formation

机译:通过抑制无意量子点形成在重掺杂硅纳米线上的悬浮量子点制造

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摘要

We aim at embedding a quantum dot on a suspended nanowire by solving the problem of unintentional quantunrdot formation, which exacerbates in a suspended nanowire. The origin of this worsening is the higher potential barrier presumably owing to the enhancement of random-dopant-induced potential fluctuation and/or higher degree of surface roughness and surface trapped charges on suspended nanowires. The higher barrier was successfully decreased by adopting a higher doping concentration as well as wider constriction patterns. Consequently, we can control the quantum dot formation in the suspended nanowire and successfully defined a single-quantum dot by patterning the double constrictions on the heavily doped suspended nanowire.
机译:我们旨在通过解决无意识的量子点形成问题将量子点嵌入到悬浮的纳米线上,该问题会加剧悬浮的纳米线。这种恶化的根源可能是较高的势垒,这可能是由于随机掺杂剂引起的电位波动的增加和/或悬浮纳米线上的表面粗糙度和表面俘获电荷的程度更高。通过采用较高的掺杂浓度和较宽的收缩模式,成功地降低了较高的势垒。因此,我们可以控制悬浮纳米线中的量子点形成,并通过在重掺杂悬浮纳米线上对双颈缩进行构图来成功定义一个单量子点。

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  • 来源
    《Japanese journal of applied physics》 |2010年第4issue1期|P.044001.1-044001.5|共5页
  • 作者单位

    Quantum Nanoelectronics Research Center, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan SORST-JST (Japan Science and Technology Agency), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;

    rnSchool of Electronics and Computer Science, University of Southampton, Highfield, Southampton, Hampshire SO17 1BJ, U.K.;

    rnQuantum Nanoelectronics Research Center, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan;

    rnSchool of Electronics and Computer Science, University of Southampton, Highfield, Southampton, Hampshire SO17 1BJ, U.K. SORST-JST (Japan Science and Technology Agency), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;

    rnDepartment of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan SORST-JST (Japan Science and Technology Agency), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;

    rnQuantum Nanoelectronics Research Center, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan SORST-JST (Japan Science and Technology Agency), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;

    rnSchool of Electronics and Computer Science, University of Southampton, Highfield, Southampton, Hampshire SO17 1BJ, U.K. Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan SORST-JST (Japan Science and Technology Agency), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;

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