TTF-TCNQ光电发射的TTF有限能谱特征：Hubbard链描述
The TTF finite-energy spectral features in photoemission of TTF-TCNQ: The Hubbard-chain description
摘要：
一个动力学理论，占所有的微观单电子过程是用来研究的频谱功能的一维哈伯德模型的整个$(k, ω)$平面，超越以往的研究集中在附近的奇异分支线的重量分布。虽然我们的预测与后来关于四硫富瓦烯-四氰基醌二甲烷（TCNQ）有机化合物光电子发射中与TCNQ有关的奇异特征的研究结果一致（TTF-TCNQ）金属相，广义理论也导致定量协议有关四硫富瓦烯（TTF）相关的有限能量光谱特征，发现其对应于大于TCNQ的原位排斥$U$的值。我们的研究揭示了TTF-TCNQ不寻常的光谱特征背后的微观机制，并为整个$(k, ω)$平面提供了一个很好的整体描述这些功能。
英文摘要：
A dynamical theory which accounts for all microscopic one-electron processes is used to study the spectral function of the 1D Hubbard model for the whole $(k, ω)$-plane, beyond previous studies which focused on the weight distribution in the vicinity of the singular branch lines only. While our predictions agree with those of the latter studies concerning the tetracyanoquinodimethane (TCNQ) related singular features in photoemission of the organic compound tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ) metallic phase, the generalized theory also leads to quantitative agreement concerning the tetrathiafulvalene (TTF) related finite-energy spectral features, which are found to correspond to a value of the on-site repulsion $U$ larger than for TCNQ. Our study reveals the microscopic mechanisms behind the unusual spectral features of TTF-TCNQ and provides a good overall description of those features for the whole $(k, ω)$-plane.
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