What Are One-Dimensional Conductors?
What Are One-Dimensional Conductors?
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什么是一维导体？
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
T. Sambongi
中科院分区：
文献类型：
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作者：
S. Kagoshima;H. Nagasawa;T. Sambongi
“一维导体”是指电导率只沿一个方向高的材料。在本卷中，我们将把注意力集中在具有金属导电性的材料上。一般来说，材料电导率的各向异性的存在并不是将其称为一维（1d）导体的充分条件。本卷中描述的一维导体是指电子沿一维轴的能带模型是有效的，而在其他方向上，应用了一些其他的传导模型，例如跳变传导模型；也就是说，我们将考虑那些具有“一维导带”的导体。更准确地说，一维导体是满足以下条件的材料：l∥≥d∥和l‐≪d‐其中l∥和d∥分别是电子平均自由程和沿一维轴的原子间距离，l‐和d‐是垂直于一维轴的相应量。
“One-dimensional conductors” are materials whose electrical conductivity is high only along one direction. In this volume we shall focus our attention on materials that show a metallic conductivity. In general, the presence of an anisotropy in the electrical conductivity of a material is not a sufficient condition for it to be termed a one-dimensional (1d) conductor. The 1d conductors described in this volume are those in which a band model for electrons is valid along the 1d axis and, along other directions, some other conduction model, for example a hopping conduction model, is applied; that is to say we shall be considering those conductors which have a “one-dimensional conduction band”. More precisely, 1d conductors are materials which satisfy the following conditions: l∥≳d∥and l┴≪d┴ where l∥ and d∥ are the electron mean free path and the interatomic distance along the 1d axis, respectively, and l┴ and d┴ are the corresponding quantities perpendicular to the 1d axis.