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 [J].

ARRIGONI, E ;

STRINATI, GC .

PHYSICAL REVIEW B, 1991, 44 (14) :7455-7465

[2] MONTE-CARLO CALCULATIONS OF COUPLED BOSON-FERMION SYSTEMS .1. [J].

BLANKENBECLER, R ;

SCALAPINO, DJ ;

SUGAR, RL .

PHYSICAL REVIEW D, 1981, 24 (08) :2278-2286

[3] LOW-TEMPERATURE BEHAVIOR OF TWO-DIMENSIONAL QUANTUM ANTIFERROMAGNETS [J].

CHAKRAVARTY, S ;

HALPERIN, BI ;

NELSON, DR .

PHYSICAL REVIEW LETTERS, 1988, 60 (11) :1057-1060

[4]

CHAKRAVARTY S, 1989, PHYS REV B, V39, P2334

[5] INCOMMENSURATE MAGNETIC FLUCTUATIONS IN LA2-XSRXCUO4 [J].

CHEONG, SW ;

AEPPLI, G ;

MASON, TE ;

MOOK, H ;

HAYDEN, SM ;

CANFIELD, PC ;

FISK, Z ;

CLAUSEN, KN ;

MARTINEZ, JL .

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 [J].

DING, HQ ;

MAKIVIC, MS .

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 [J].

DOPF, G ;

KRAFT, T ;

MURAMATSU, A ;

HANKE, W .

PHYSICA B, 1990, 165 :1015-1016

[9] 3-BAND HUBBARD-MODEL - A MONTE-CARLO STUDY [J].

DOPF, G ;

MURAMATSU, A ;

HANKE, W .

PHYSICAL REVIEW B, 1990, 41 (13) :9264-9276

[10]

DOPF G, 1991, P INT C MATERIALS ME

← 1 2 3 4 →