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arXiv 1306.0354cond-mat.str-el
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有机化合物的从头算GW计算(TMTSF)2 PF 6

Ab initio GW calculation for organic compounds (TMTSF)2PF6

Kazuma Nakamura, Shiro Sakai, Ryotaro Arita, Kazuhiko Kuroki

摘要:

我们提出了一个从头计算GW研究有机化合物(TMTSF)2 PF 6的动力学效应。计算的偏振反射率再现实验等离子体边缘在约0.2 eV的E|| b'和1.0 eV(E)||a.低能等离子体激元来自与其他高能带能量隔离的低能窄带,并通过GW型自能影响低能电子结构。由于准一维能带结构,在低能占据态中沿X-M线存在较大的等离子体激元诱导电子散射。

英文摘要:

We present an ab initio GW calculation to study dynamical effects on an organic compound (TMTSF)2PF6. Calculated polarized reflectivities reproduce experimental plasma edges at around 0.2 eV for E||b' and 1.0 eV for E||a. The low-energy plasmons come out from the low-energy narrow bands energetically isolated from other higher-energy bands, and affect the low-energy electronic structure via the GW-type self-energy. Because of the quasi-one-dimensional band structure, a large plasmon-induced electron scattering is found in the low-energy occupied states along the X-M line.

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