Journal of Low Temperature Physics

, Volume 196, Issue 1–2, pp 293–300 | Cite as

The Optical Conductivity for a Spin-Peierls Ground State of \(\hbox {(TMTTF)}_{2}\hbox {PF}_{6}\) with Tetramer Formation

  • T. YamaguchiEmail author
  • K. Iwano


We theoretically investigate the optical conductivity of \(\hbox {(TMTTF)}_{2}\hbox {PF}_{6}\) in the spin-Peierls ground state within the framework of the exact diagonalization method at absolute zero temperature (\(T=0\)). As an effective model, a 1/4-filled 1D (one-dimensional) extended Hubbard model with tetramerization is employed. Using appropriate parameters of the model which have already been reported, we clarify the electronic photoexcitation energies from the spin-Peierls ground state. Since some experiments indicate the formation of a tetramer in the spin-Peierls ground state of \(\hbox {(TMTTF)}_{2}\hbox {PF}_{6}\), our results are useful to understand the effects of tetramerization on the optical properties of \(\hbox {(TMTTF)}_{2}\hbox {PF}_{6}\).


One-dimensional system Optical conductivity Exact diagonalization 



This study was supported by the Grant-in-Aid for Scientific Research from JSPS (Grant No. JP17K05509) and JST CREST Grant No. JPMJCR1661.


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Authors and Affiliations

  1. 1.Institute of Materials Structure ScienceHigh Energy Accelerator Research Organization (KEK)TsukubaJapan

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