Neel and spin-peierls ground states of two-dimensional SU(N) quantum antiferromagnets -: art. no. 117203

被引：88

作者：

Harada, K ^{[1
]}

Kawashima, N

Troyer, M

机构：

[1] Kyoto Univ, Dept Appl Anal & Complex Dynam Syst, Kyoto 6068501, Japan

[2] Tokyo Metropolitan Univ, Dept Phys, Tokyo 1920397, Japan

[3] Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.90.117203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The two-dimensional SU(N) quantum antiferromagnet, a generalization of the quantum Heisenberg model, is investigated by quantum Monte Carlo simulations. The ground state for Nless than or equal to4 is found to be of the Neel type with broken SU(N) symmetry, whereas it is of the Spin-Peierls type for Ngreater than or equal to5 with broken lattice translational invariance. Our computation of the magnetization and the dimerization order parameter shows the absence of the intermediate spin-liquid phase.

引用

页数：4

共 40 条

[1] LARGE-N LIMIT OF SU(N) QUANTUM SPIN CHAINS [J].

AFFLECK, I .

PHYSICAL REVIEW LETTERS, 1985, 54 (10) :966-969

[2] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].

ANDERSON, PW .

SCIENCE, 1987, 235 (4793) :1196-1198

[3] RESONATING VALENCE BONDS - NEW KIND OF INSULATOR [J].

ANDERSON, PW .

MATERIALS RESEARCH BULLETIN, 1973, 8 (02) :153-160

[4]

[Anonymous], UNPUB

[5] FUNCTIONAL INTEGRAL THEORIES OF LOW-DIMENSIONAL QUANTUM HEISENBERG MODELS [J].

AROVAS, DP ;

AUERBACH, A .

PHYSICAL REVIEW B, 1988, 38 (01) :316-332

[6] SPIN DYNAMICS IN THE SQUARE-LATTICE ANTIFERROMAGNET [J].

AUERBACH, A ;

AROVAS, DP .

PHYSICAL REVIEW LETTERS, 1988, 61 (05) :617-620

[7] Unveiling order behind complexity: Coexistence of ferromagnetism and Bose-Einstein condensation [J].

Batista, CD ;

Ortiz, G ;

Gubernatis, JE .

PHYSICAL REVIEW B, 2002, 65 (18) :1-4

[8] Long-range Neel order in the triangular Heisenberg model [J].

Capriotti, L ;

Trumper, AE ;

Sorella, S .

PHYSICAL REVIEW LETTERS, 1999, 82 (19) :3899-3902

[9] DIPOLE AND QUADRUPOLE PHASE-TRANSITIONS IN SPIN-1 MODELS [J].

CHEN, HH ;

LEVY, PM .

PHYSICAL REVIEW B, 1973, 7 (09) :4267-4284

[10] Surprises on the way from one- to two-dimensional quantum magnets: The ladder materials [J].

Dagotto, E ;

Rice, TM .

SCIENCE, 1996, 271 (5249) :618-623

← 1 2 3 4 →