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Volumn 45, Issue 2, 1999, Pages 228-234

Non-Fermi liquids in the two-band extended Hubbard model

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Indexed keywords


EID: 0033555106     PISSN: 02955075     EISSN: None     Source Type: Journal    
DOI: 10.1209/epl/i1999-00151-4     Document Type: Article
Times cited : (86)

References (34)
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    • For related works on an Anderson impurity coupled to screening fermions, see PERAKIS I. et al., Phys. Rev. Lett., 70 (1993) 3467; GIAMARCHI T. et al., Phys. Rev. Lett., 70 (1993) 3967; ZHANG G. M. and LU YU, Phys. Rev. Lett., 72 (1994) 2474; SIRE C. et al., Phys. rev. Lett., 72 (1994) 2478.
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    • Our focus here is the effect of intersite interactions on the non-Fermi liquid excitation spectra, which requires the study of the intersite quantum fluctuations in a non-ordered state
    • Spatial ordering in related models can already be studied in the usual large-D limit. See VOLLHARDT D. et al., Z. Phys. B, 103 (1997) 283; VAN DONGEN P. J., Phys. Rev. Lett., 74 (1995) 182. Our focus here is the effect of intersite interactions on the non-Fermi liquid excitation spectra, which requires the study of the intersite quantum fluctuations in a non-ordered state.
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    • note
    • For simplicity, here we take the large-D limit of the Bethe lattice.
  • 22
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    • note
    • A large but finite U can be shown not to affect our conclusion.
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    • note
    • c - 1) and M(σ, σ′) = 0.
  • 29
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    • note
    • s). This may become important when the intersite spin-exchange interactions become large.
  • 32
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    • note
    • i(√2/4)Φc(∑σ Χσσ-Χ00).
  • 33
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    • note
    • Κ/4)) - π].
  • 34
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    • note
    • 2 of eq. (9).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.