Deformation of Fermi surface due to antiferromagnetic correlation

K. Morita; K. Miyake

doi:10.1016/S0921-4526(99)00913-8

Deformation of Fermi surface due to antiferromagnetic correlation

K. Morita, K. Miyake

Research output: Contribution to journal › Conference article › peer-review

7 Citations (Scopus)

Abstract

It is investigated, on the basis of the fluctuation exchange approximation, as to how the shape of the Fermi surface is modified in two-dimensional t-t′-U Hubbard model at half-filling as the strength of the onsite Coulomb interaction U is increased. The antiferromagnetic (AF) correlation length is shown to be enhanced as the Coulomb interaction gets closer to the critical value U_c for the onset of AF order. At the same time, the shape of the renormalized Fermi surface is deformed showing the tendency of nesting near U_c.

Original language	English
Pages (from-to)	812-813
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	281-282
DOIs	https://doi.org/10.1016/S0921-4526(99)00913-8
Publication status	Published - Jun 1 2000
Externally published	Yes
Event	Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn Duration: Aug 24 1999 → Aug 28 1999

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(99)00913-8

Cite this

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title = "Deformation of Fermi surface due to antiferromagnetic correlation",

abstract = "It is investigated, on the basis of the fluctuation exchange approximation, as to how the shape of the Fermi surface is modified in two-dimensional t-t′-U Hubbard model at half-filling as the strength of the onsite Coulomb interaction U is increased. The antiferromagnetic (AF) correlation length is shown to be enhanced as the Coulomb interaction gets closer to the critical value Uc for the onset of AF order. At the same time, the shape of the renormalized Fermi surface is deformed showing the tendency of nesting near Uc.",

author = "K. Morita and K. Miyake",

note = "Funding Information: We acknowlege O. Narikiyo for fruitful discussions. One of us (K.M.) is grateful to Y. Okuno and T. Takimoto for their useful comments and advice on the technique of numerical calculation. This work is supported by a Grant-in-Aid for COE Research (10CE2004) of Ministry of Education, Science, Sports and Culture.; Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) ; Conference date: 24-08-1999 Through 28-08-1999",

year = "2000",

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doi = "10.1016/S0921-4526(99)00913-8",

language = "English",

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pages = "812--813",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

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T1 - Deformation of Fermi surface due to antiferromagnetic correlation

AU - Morita, K.

AU - Miyake, K.

N1 - Funding Information: We acknowlege O. Narikiyo for fruitful discussions. One of us (K.M.) is grateful to Y. Okuno and T. Takimoto for their useful comments and advice on the technique of numerical calculation. This work is supported by a Grant-in-Aid for COE Research (10CE2004) of Ministry of Education, Science, Sports and Culture.

PY - 2000/6/1

Y1 - 2000/6/1

N2 - It is investigated, on the basis of the fluctuation exchange approximation, as to how the shape of the Fermi surface is modified in two-dimensional t-t′-U Hubbard model at half-filling as the strength of the onsite Coulomb interaction U is increased. The antiferromagnetic (AF) correlation length is shown to be enhanced as the Coulomb interaction gets closer to the critical value Uc for the onset of AF order. At the same time, the shape of the renormalized Fermi surface is deformed showing the tendency of nesting near Uc.

AB - It is investigated, on the basis of the fluctuation exchange approximation, as to how the shape of the Fermi surface is modified in two-dimensional t-t′-U Hubbard model at half-filling as the strength of the onsite Coulomb interaction U is increased. The antiferromagnetic (AF) correlation length is shown to be enhanced as the Coulomb interaction gets closer to the critical value Uc for the onset of AF order. At the same time, the shape of the renormalized Fermi surface is deformed showing the tendency of nesting near Uc.

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U2 - 10.1016/S0921-4526(99)00913-8

DO - 10.1016/S0921-4526(99)00913-8

M3 - Conference article

AN - SCOPUS:0033885313

SN - 0921-4526

VL - 281-282

SP - 812

EP - 813

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99)

Y2 - 24 August 1999 through 28 August 1999

ER -

Deformation of Fermi surface due to antiferromagnetic correlation

Abstract

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