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Heterointerface effects on the charging energy of the shallow D~- ground state in silicon: Role of dielectric mismatch

机译:异质界面对硅中浅D〜-基态充电能量的影响:介电失配的作用

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摘要

Donor states in Si nanodevices can be strongly modified by nearby insulating barriers and metallic gates. Experimental results indicate a strong reduction in the charging energy of isolated As dopants in Si nonplanar field effect transistors relative to the bulk value. By studying the problem of two electrons bound to a shallow donor within the effective mass approach, we find that the measured reduction in the charging energy (measurements also presented here) may be due to a combined effect of the insulator screening and the proximity of metallic gates. '
机译:Si纳米器件中的施主态可以通过附近的绝缘势垒和金属栅强烈改变。实验结果表明,相对于体值,Si非平面场效应晶体管中隔离的As掺杂剂的充电能量大大降低。通过研究有效质量方法中两个电子绑定到浅施主上的问题,我们发现测得的充电能量降低(此处也提供了测量方法)可能是由于绝缘体屏蔽层和金属的邻近效应共同作用的结果。盖茨。 '

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  • 来源
    《Physical review》 |2010年第7期|p.075317.1-075317.7|共7页
  • 作者单位

    Instituto de Ciencia de Materiales de Madrid (CSIC), Cantoblanco, 28049 Madrid, Spain;

    rnKavli Institute of Nanoscience, Delft University of Technology, Lorentzweg I, 2628 CJ Delft, The Netherlands;

    rnKavli Institute of Nanoscience, Delft University of Technology, Lorentzweg I, 2628 CJ Delft, The Netherlands;

    rnKavli Institute of Nanoscience, Delft University of Technology, Lorentzweg I, 2628 CJ Delft, The Netherlands;

    rnKavli Institute of Nanoscience, Delft University of Technology, Lorentzweg I, 2628 CJ Delft, The Netherlands;

    rnInstituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972 Rio de Janeiro, RJ, Brazil;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    semiconductor devices; quantum computation; impurity and defect levels; energy states of adsorbed species; single electron devices;

    机译:半导体器件;量子计算杂质和缺陷水平;吸附物质的能量状态;单电子器件;

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