ANTIFERROMAGNETISM AND INCOMMENSURATE STRUCTURE IN THE 3-BAND HUBBARD-MODEL

被引：26

作者：

DOPF, G ^{[1
]}

MURAMATSU, A ^{[1
]}

HANKE, W ^{[1
]}

机构：

[1] FORSCHUNGSZENTRUM JULICH, HOCHSTLEISTUNGSRECHENZENTRUM, W-5170 JULICH 1, GERMANY

来源：

EUROPHYSICS LETTERS | 1992年 / 17卷 / 6BIS期

关键词：

HEISENBERG AND OTHER QUANTIZED LOCALIZED SPIN MODELS; GENERAL THEORIES AND COMPUTATIONAL TECHNIQUES;

D O I：

10.1209/0295-5075/17/6/014

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetic properties of the three-band Hubbard model were studied using both a quantum Monte Carlo canonical projector method as well as the finite-temperature grand canonical approach. System sizes up to 10 x 10 unit cells (each cell consisting of three sites) and inverse temperatures (projection parameters) up to beta = 30 (THETA = 80) are simulated. We find antiferromagnetic long-range order (AFLRO) in the undoped case (1 hole/elementary cell) both for small and large values of the charge-transfer energy. Doping destroys the AFLRO and an incommensurate structure is found with a wavevector along the (1, 0) line.

引用

页码：559 / 564

页数：6

共 34 条

[1] DOPING-INDUCED INCOMMENSURATE ANTIFERROMAGNETISM IN A MOTT-HUBBARD INSULATOR
ARRIGONI, E
STRINATI, GC
[J]. PHYSICAL REVIEW B, 1991, 44 (14): : 7455 - 7465
[2] MONTE-CARLO CALCULATIONS OF COUPLED BOSON-FERMION SYSTEMS .1.
BLANKENBECLER, R
SCALAPINO, DJ
SUGAR, RL
[J]. PHYSICAL REVIEW D, 1981, 24 (08): : 2278 - 2286
[3] LOW-TEMPERATURE BEHAVIOR OF TWO-DIMENSIONAL QUANTUM ANTIFERROMAGNETS
CHAKRAVARTY, S
HALPERIN, BI
NELSON, DR
[J]. PHYSICAL REVIEW LETTERS, 1988, 60 (11) : 1057 - 1060
[4] CHAKRAVARTY S, 1989, PHYS REV B, V39, P2334
[5] INCOMMENSURATE MAGNETIC FLUCTUATIONS IN LA2-XSRXCUO4
CHEONG, SW
AEPPLI, G
MASON, TE
MOOK, H
HAYDEN, SM
CANFIELD, PC
FISK, Z
CLAUSEN, KN
MARTINEZ, JL
[J]. PHYSICAL REVIEW LETTERS, 1991, 67 (13) : 1791 - 1794
[6] SPIN CORRELATIONS OF 2D QUANTUM ANTIFERROMAGNET AT LOW-TEMPERATURES AND A DIRECT COMPARISON WITH NEUTRON-SCATTERING EXPERIMENTS
DING, HQ
MAKIVIC, MS
[J]. PHYSICAL REVIEW LETTERS, 1990, 64 (12) : 1449 - 1452
[7] DING HQ, 1989, PHYS REV B, V43, P3562
[8] CHARGE-TRANSFER GAP FROM A MONTE-CARLO SIMULATION OF THE 3-BAND HUBBARD-MODEL
DOPF, G
KRAFT, T
MURAMATSU, A
HANKE, W
[J]. PHYSICA B, 1990, 165 : 1015 - 1016
[9] 3-BAND HUBBARD-MODEL - A MONTE-CARLO STUDY
DOPF, G
MURAMATSU, A
HANKE, W
[J]. PHYSICAL REVIEW B, 1990, 41 (13): : 9264 - 9276
[10] DOPF G, 1991, P INT C MATERIALS ME

← 1 2 3 4 →