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Fractionally charged excitations in the charge density wave state of a quarter-filled t-J chain with quantum phonons

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Abstract:

Elementary excitations of the 4k F charge density wave state of a quarter-filled strongly correlated electronic one-dimensional chain are investigated in the presence of dispersionless quantum optical phonons using Density Matrix Renormalization Group techniques. Such excitations are shown to be topological solitons carrying charge e/2 and spin zero. Relevance to the 4k F charge density wave instability in (DI - DCNQI)2 A g or recently discovered in (TMTTF)2X ( X=PF 6, AsF6) is discussed.

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Authors and Affiliations

  1. Laboratoire de Physique Quantique, Université Paul Sabatier, 31062 Toulouse, France, , , , , , FR

    P. Maurel, M.B. Lepetit & D. Poilblanc

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  1. P. Maurel
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  2. M.B. Lepetit
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  3. D. Poilblanc
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Received 30 March 2001 and Received in final form 11 May 2001

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Maurel, P., Lepetit, M. & Poilblanc, D. Fractionally charged excitations in the charge density wave state of a quarter-filled t-J chain with quantum phonons. Eur. Phys. J. B 21, 481–484 (2001). https://doi.org/10.1007/s100510170156

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  • DOI: https://doi.org/10.1007/s100510170156

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