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Volumn 66, Issue 14, 2002, Pages 1405131-1405134

Fermi surface evolution and collapse of the Mott pseudogap in Nd2-x-CexCuO4±δ

Author keywords

[No Author keywords available]

Indexed keywords

CERIUM; COPPER DERIVATIVE; METAL OXIDE; NEODYMIUM;

EID: 0036813612     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article
Times cited : (132)

References (40)
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    • A three-band model gives very similar results (Ref. 4).
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    • mf as a Mott pseudogap since it arises from correlation effects in the spirit of the Mott-Hubbard metal-insulator transition. We do not address disorder related localization effects away from half filling.
  • 9
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    • cond-mat/0108075. to be published
    • There are many other views on the origin of pseudogap in the cuprates (superconducting fluctuations, etc.). See, e. g., R.S. Markiewicz, cond-mat/0108075, Phys. Rev. Lett. (to be published); S. Andergassen et al., Phys. Rev. Lett. 87, 056401 (2001).
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    • There are many other views on the origin of pseudogap in the cuprates (superconducting fluctuations, etc.). See, e. g., R.S. Markiewicz, cond-mat/0108075, Phys. Rev. Lett. (to be published); S. Andergassen et al., Phys. Rev. Lett. 87, 056401 (2001).
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    • Even without including the small t″, we obtain quite good agreement with experiment.
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    • Optimal values of t′, t″ differ slightly in t-U and t-J models [Tohyama et al., J. Phys. Soc. Jpn. 69, 9 (2000)], former values are more relevant here.
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    • note
    • 0 the bare susceptibility.
  • 33
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    • note
    • Q to zero, but there is still short-range magnetization and a (somewhat shifted) QCP, now associated with termination of the T=0 Neel order.
  • 38
  • 39
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    • note
    • N falls off so much faster with hole vs electron doping. This point will be taken up further elsewhere.
  • 40
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    • note
    • Note that in the t-J models the bands are inverted for treating electron doping, leading to a sign change of t' which is not needed in the t-U models.


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