Characteristics of the Charged Hole in the One-Dimensional Mott Insulator
Charge excitations in the one-dimensional Hubbard model are investigated, with the use of the Bethe-Ansatz method, by inserting the charged hole into the Mott insulator. The density of states and the momentum-dependent susceptibility for the charged hole are shown to have a large enhancement due to the formation of the Hubbard gap. The logarithmic anomaly near 4k F for the latter quantity is investigated in the vicinity of the Mott insulator. The compressibility and the specific heat calculated in the whole temperature region are discussed in connection with the characteristics of the charged holes.
KeywordsMott Insulator Lower Energy Region Charged Hole Divergent Behaviour Spinless Fermion
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- I. A. Musurkin and A. A. Ovchinnikov: Soviet Physics Solid State 12 (1971) 2031.Google Scholar
- C. F. Coll III: Phys. Rev. B9 (1974) 2150.Google Scholar
- N. Kawakami, T. Usuki and A. Okiji: Phys. Lett.(1989) in press.Google Scholar
- N. Kawakami and A. Okiji: submitted to Phys. Rev. B (1989).Google Scholar
- This specification of excitations is similar to the one discussed in the RVB theory, see  and also S. Kivelson, D. Rokhsar and J. Sethna, Phys. Rev. B35 (1987) 8865.Google Scholar