玻尔兹曼常数
热电效应
玻尔兹曼方程
凝聚态物理
材料科学
物理
统计物理学
热力学
作者
Changwook Jeong,Raseong Kim,Mathieu Luisier,Supriyo Datta,Mark Lundstrom
摘要
The Landauer approach to diffusive transport is mathematically related to the solution of the Boltzmann transport equation, and expressions for the thermoelectric parameters in both formalisms are presented. Quantum mechanical and semiclassical techniques to obtain from a full description of the bandstructure, E(k), the number of conducting channels in the Landauer approach or the transport distribution in the Boltzmann solution are developed and compared. Thermoelectric transport coefficients are evaluated from an atomistic level, full band description of a crystal. Several example calculations for representative bulk materials are presented, and the full band results are related to the more common effective mass formalism. Finally, given a full E(k) for a crystal, a procedure to extract an accurate, effective mass level description is presented.
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