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Tunable electronic correlation effects in nanotube-light interactions

机译:纳米管-光相互作用中的可调电子相关效应

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摘要

Electronic many-body correlation effects in one-dimensional (1D) systems such as carbon nanotubes have been predicted to strongly modify the nature of photoexcited states. Here we directly probe this effect using broadband elastic light scattering from individual suspended carbon nanotubes under electrostatic gating conditions. We observe significant shifts in optical transition energies, as well as line broadening, as the carrier density is increased. The results demonstrate the role of screening of many-body electronic interactions on the different length scales, a feature inherent to quasi-1D systems. Our findings further demonstrate the possibility of electrical tuning of optical transitions and provide a basis for understanding of various optical phenomena in carbon nanotubes and other quasi-1D systems in the presence of charge carrier doping.
机译:一维(1D)系统(例如碳纳米管)中的电子多体关联效应已被预测会强烈改变光激发态的性质。在这里,我们使用静电选通条件下单个悬浮碳纳米管的宽带弹性光散射直接探测这种效应。我们观察到,随着载流子密度的增加,光学跃迁能的显着变化以及谱线加宽。结果证明了在不同长度尺度上筛选多体电子相互作用的作用,这是准一维系统固有的功能。我们的发现进一步证明了电跃迁对光学跃迁的可能性,并为理解在存在电荷载流子掺杂的情况下碳纳米管和其他准1D系统中的各种光学现象提供了基础。

著录项

  • 来源
    《Physical review》 |2015年第20期|205407.1-205407.10|共10页
  • 作者单位

    Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan,Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan,Departments of Physics and Electrical Engineering, Columbia University, New York, New York 10027, USA;

    Department of Mechanical Engineering, Columbia University, New York, New York 10027, USA,SanDisk, 951 SanDisk Drive, Milpitas, California 95035, USA;

    Department of Electrical Engineering, Columbia University, New York, New York 10027, USA;

    Division of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan;

    Division of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan;

    IBM Research Division, T. J. Watson Research Center, Yorktown Heights, New York 10598, USA,Skolkovo Institute of Science and Technology, 3 Nobel Street, Skolkovo 143025, Russian Federation;

    Department of Physics & Astronomy, University of Utah, Salt Lake City, Utah 84112, USA,Department of Physics, Columbia University, New York, New York 10027, USA;

    Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA,National Center for Nanoscience and Technology, Beijing 100080, China;

    Institut de Physique et Chimie des Materiaux de Strasbourg and NIE, UMR 7504, Universite de Strasbourg and CNRS, 23 rue du Loess, Boite Postale 43, 67034 Strasbourg Cedex 2, France;

    Department of Physics, Columbia University, New York, New York 10027, USA;

    Department of Mechanical Engineering, Columbia University, New York, New York 10027, USA;

    Departments of Physics and Electrical Engineering, Columbia University, New York, New York 10027, USA;

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

    nanotubes; excitons and related phenomena; electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals; brillouin and rayleigh scattering; other light scattering;

    机译:纳米管激子和相关现象;纳米级材料的电子结构:簇;纳米颗粒;纳米管和纳米晶体;布里洛因和瑞利散射;其他光散射;

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