ON THE CHARGE-EXCITATION GAP OF THE 2D HALF-FILLED HUBBARD-MODEL - A QUANTUM MONTE-CARLO STUDY

被引：2

作者：

CHEN, F ^{[1
]}

YING, HP ^{[1
]}

XU, TF ^{[1
]}

LI, WZ ^{[1
]}

机构：

[1] ZHEJIANG INST MODERN PHYS,HANGZHOU 310027,PEOPLES R CHINA

来源：

PHYSICS LETTERS A | 1994年 / 189卷 / 1-2期

关键词：

D O I：

10.1016/0375-9601(94)90825-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using the grand canonical quantum Monte Carlo method, we calculate the double occupancy and the specific heat of the half-filled two-dimensional Hubbard model. The results show that, as the temperature is increased, the electronic structure can hardly be regarded as consisting of two rigid bands, and midgap states are created which reduce the charge-excitation gap.

引用

页码：99 / 102

页数：4

共 50 条

[1] Spectral weight function and charge-excitation gap of the half-filled 2D Hubbard model
Chen, F
Ying, HP
Xu, TF
Li, WZ
COMMUNICATIONS IN THEORETICAL PHYSICS, 1996, 25 (02) : 141 - 144
[2] CHARGE SUSCEPTIBILITY OF THE 2-DIMENSIONAL HUBBARD-MODEL NEAR THE HALF-FILLED BAND - A MONTE-CARLO STUDY
OTSUKA, H
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1990, 59 (08) : 2916 - 2921
[3] MONTE-CARLO SIMULATION OF NEARLY HALF-FILLED HUBBARD-MODEL IN THE GROUND-STATE
FURUKAWA, N
IMADA, M
PHYSICA C, 1991, 185 (pt 3): : 1443 - 1444
[4] Quantum Monte Carlo study of the half-filled Hubbard model on the honeycomb lattice
Otsuka, Yuichi
Yunoki, Seiji
Sorella, Sandro
24TH IUPAP CONFERENCE ON COMPUTATIONAL PHYSICS (IUPAP-CCP 2012), 2013, 454
[5] SOME RESULTS FROM QUANTUM MONTE-CARLO STUDIES OF THE 2D HUBBARD-MODEL
SCALAPINO, DJ
JOURNAL OF LOW TEMPERATURE PHYSICS, 1994, 95 (1-2) : 169 - 176
[6] SINGLE-HOLE STATE IN HALF-FILLED 2D HUBBARD-MODEL
LO, CF
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS, 1991, 13 (01): : 127 - 130
[7] CHARGE-ORDERED SOLUTION OF THE HALF-FILLED HUBBARD-MODEL
RICHTER, A
MIZIA, J
PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1979, 92 (02): : 519 - 523
[8] HUBBARD-MODEL IN INFINITE DIMENSIONS - A QUANTUM MONTE-CARLO STUDY
JARRELL, M
PHYSICAL REVIEW LETTERS, 1992, 69 (01) : 168 - 171
[9] A Monte Carlo study of the half-filled two-dimensional Hubbard model
Zhu, X
Liu, C
COMMUNICATIONS IN THEORETICAL PHYSICS, 2001, 36 (05) : 625 - 630
[10] QUANTUM MONTE-CARLO STUDY OF QUASI-PARTICLES IN THE HUBBARD-MODEL
VONDERLINDEN, W
MORGENSTERN, I
DERAEDT, H
PHYSICAL REVIEW B, 1990, 41 (07): : 4669 - 4673

← 1 2 3 4 5 →