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Charge susceptibility in the t-J model. / Aristov, D. N.; Khaliullin, G.

в: Physical Review B - Condensed Matter and Materials Physics, Том 74, № 4, 045124, 02.08.2006.

Результаты исследований: Научные публикации в периодических изданияхстатьяРецензирование

Harvard

Aristov, DN & Khaliullin, G 2006, 'Charge susceptibility in the t-J model', Physical Review B - Condensed Matter and Materials Physics, Том. 74, № 4, 045124. https://doi.org/10.1103/PhysRevB.74.045124

APA

Aristov, D. N., & Khaliullin, G. (2006). Charge susceptibility in the t-J model. Physical Review B - Condensed Matter and Materials Physics, 74(4), [045124]. https://doi.org/10.1103/PhysRevB.74.045124

Vancouver

Aristov DN, Khaliullin G. Charge susceptibility in the t-J model. Physical Review B - Condensed Matter and Materials Physics. 2006 Авг. 2;74(4). 045124. https://doi.org/10.1103/PhysRevB.74.045124

Author

Aristov, D. N. ; Khaliullin, G. / Charge susceptibility in the t-J model. в: Physical Review B - Condensed Matter and Materials Physics. 2006 ; Том 74, № 4.

BibTeX

@article{512eee5593b1471b94ad1262792f1433,
title = "Charge susceptibility in the t-J model",
abstract = "Momentum and doping dependence of the static charge susceptibility χ (q) in the t- t′ -J model is investigated. Correlations lead to a strongly momentum-dependent renormalization of χ (q). The charge susceptibility near the (π,π) region of the Brillouin zone is strongly suppressed as the hole density δ is decreased. However, contrary to naive expectations, χ (q) around q= (π,0) and (0,π) remains large and practically unchanged at δ∼0.1-0.5. This effect is consistent with a tendency towards low-energy charge fluctuations with the wave vectors along the Γ-X direction, reported in earlier studies. Our main finding is that the above trends are amplified by J -driven pairing effects, indicating that the pseudogap formation may promote the charge inhomogeneity. The next-nearest hopping t′ leads to weakening of the above momentum-selective renormalizations of χ (q). We analyze the effects of long-range Coulomb interaction, taking into account a layered structure of cuprates. As an application, the results are discussed in the context of bond-stretching phonon softening in hole-doped cuprates. In particular, a peculiar doping and momentum dependence of the electron-phonon coupling constant is found.",
author = "Aristov, {D. N.} and G. Khaliullin",
year = "2006",
month = aug,
day = "2",
doi = "10.1103/PhysRevB.74.045124",
language = "English",
volume = "74",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "4",

}

RIS

TY - JOUR

T1 - Charge susceptibility in the t-J model

AU - Aristov, D. N.

AU - Khaliullin, G.

PY - 2006/8/2

Y1 - 2006/8/2

N2 - Momentum and doping dependence of the static charge susceptibility χ (q) in the t- t′ -J model is investigated. Correlations lead to a strongly momentum-dependent renormalization of χ (q). The charge susceptibility near the (π,π) region of the Brillouin zone is strongly suppressed as the hole density δ is decreased. However, contrary to naive expectations, χ (q) around q= (π,0) and (0,π) remains large and practically unchanged at δ∼0.1-0.5. This effect is consistent with a tendency towards low-energy charge fluctuations with the wave vectors along the Γ-X direction, reported in earlier studies. Our main finding is that the above trends are amplified by J -driven pairing effects, indicating that the pseudogap formation may promote the charge inhomogeneity. The next-nearest hopping t′ leads to weakening of the above momentum-selective renormalizations of χ (q). We analyze the effects of long-range Coulomb interaction, taking into account a layered structure of cuprates. As an application, the results are discussed in the context of bond-stretching phonon softening in hole-doped cuprates. In particular, a peculiar doping and momentum dependence of the electron-phonon coupling constant is found.

AB - Momentum and doping dependence of the static charge susceptibility χ (q) in the t- t′ -J model is investigated. Correlations lead to a strongly momentum-dependent renormalization of χ (q). The charge susceptibility near the (π,π) region of the Brillouin zone is strongly suppressed as the hole density δ is decreased. However, contrary to naive expectations, χ (q) around q= (π,0) and (0,π) remains large and practically unchanged at δ∼0.1-0.5. This effect is consistent with a tendency towards low-energy charge fluctuations with the wave vectors along the Γ-X direction, reported in earlier studies. Our main finding is that the above trends are amplified by J -driven pairing effects, indicating that the pseudogap formation may promote the charge inhomogeneity. The next-nearest hopping t′ leads to weakening of the above momentum-selective renormalizations of χ (q). We analyze the effects of long-range Coulomb interaction, taking into account a layered structure of cuprates. As an application, the results are discussed in the context of bond-stretching phonon softening in hole-doped cuprates. In particular, a peculiar doping and momentum dependence of the electron-phonon coupling constant is found.

UR - http://www.scopus.com/inward/record.url?scp=33746517918&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.74.045124

DO - 10.1103/PhysRevB.74.045124

M3 - Article

AN - SCOPUS:33746517918

VL - 74

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 4

M1 - 045124

ER -

ID: 36119096