What Are One-Dimensional Conductors?
“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.
KeywordsCharge Density Wave Electron Wave Function Band Model Metallic Conductivity Platinum Atom
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