CHARGE MASS SINGULARITY IN 2-DIMENSIONAL HUBBARD-MODEL

被引：74

作者：

FURUKAWA, N

IMADA, M

机构：

[1] Institute for Solid State Physics, University of Tokyo, Minato-ku, Tokyo 106

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1993年 / 62卷 / 08期

关键词：

HUBBARD MODEL; MOTT TRANSITION; METAL-INSULATOR TRANSITION; QUANTUM MONTE-CARLO; STRONG CORRELATION; CHARGE SUSCEPTIBILITY; MASS SINGULARITY; UNIVERSALITY;

D O I：

10.1143/JPSJ.62.2557

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Two-dimensional Hubbard model with both nearest- and next-nearest-neighbor transfers is studied. A singularity in the charge susceptibility at the Mott transition point delta-->0 is observed, leading to the anomaly of the charge mass m(c)* in the form m(c)* is-proportional-to Absolute value of delta-1, where delta is the doping concentration. The singularity is similar to that in the case without the next-nearest-neighbor transfer. This indicates that the singularity in the charge mass is a universal nature of this model, irrespective of its band structure.

引用

页码：2557 / 2560

页数：4

共 20 条

[11] LUTTINGER ANOMALY EXPONENT OF MOMENTUM DISTRIBUTION IN THE HUBBARD CHAIN
KAWAKAMI, N
YANG, SK
[J]. PHYSICS LETTERS A, 1990, 148 (6-7) : 359 - 362
[12] CHARGE EXCITATIONS IN THE ONE-DIMENSIONAL HUBBARD-MODEL
KAWAKAMI, N
OKIJI, A
[J]. PHYSICAL REVIEW B, 1989, 40 (10): : 7066 - 7072
[13] Mott N. F., 1974, METAL INSULATOR TRAN
[14] THE BASIS OF THE ELECTRON THEORY OF METALS, WITH SPECIAL REFERENCE TO THE TRANSITION METALS
MOTT, NF
[J]. PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION A, 1949, 62 (355): : 416 - 422
[15] NUMERICAL SIMULATIONS OF THE 2-DIMENSIONAL HUBBARD-MODEL - DYNAMIC PROPERTIES
SCALAPINO, DJ
[J]. PHYSICA C, 1991, 185 : 104 - 113
[16] SCALAPINO DJ, 1990, HIGH TEMPERATURE SUP, P314
[17] CORRELATED FERMIONS IN 1 DIMENSION
SCHULZ, HJ
[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 1991, 5 (1-2): : 57 - 74
[18] CORRELATION EXPONENTS AND THE METAL-INSULATOR-TRANSITION IN THE ONE-DIMENSIONAL HUBBARD-MODEL
SCHULZ, HJ
[J]. PHYSICAL REVIEW LETTERS, 1990, 64 (23) : 2831 - 2834
[19] CHARGE SUSCEPTIBILITY OF THE ONE-DIMENSIONAL HUBBARD-MODEL
USUKI, T
KAWAKAMI, N
OKIJI, A
[J]. PHYSICS LETTERS A, 1989, 135 (8-9) : 476 - 480
[20] MOTT TRANSITION IN THE D = INFINITY HUBBARD-MODEL AT ZERO TEMPERATURE
ZHANG, XY
ROZENBERG, MJ
KOTLIAR, G
[J]. PHYSICAL REVIEW LETTERS, 1993, 70 (11) : 1666 - 1669

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