EFFECT OF SMALL INTERCHAIN COUPLING ON ONE-DIMENSIONAL ANTIFERROMAGNETIC QUANTUM HEISENBERG SPIN SYSTEMS - THE INTEGER-SPIN CASE

被引：21

作者：

AZZOUZ, M ^{[1
]}

DOUCOT, B ^{[1
]}

机构：

[1] CNRS,CTR RECH TRES BASSES TEMP,F-38042 GRENOBLE 9,FRANCE

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.47.8660

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A two-dimensional array of weakly coupled antiferromagnetic spin chains is investigated using the Schwinger-boson technique. This method is known to give a good description of integer spins already at the mean-field level. We find that a finite coupling is necessary to introduce long-range antiferromagnetic order, consistently with the presence of a gap for a single chain. The energy gap and spin-spin correlations are calculated. These calculations correspond to the behavior of a nonlinear a model without the one-dimensional topological term.

引用

页码：8660 / 8666

页数：7

共 22 条

[1] LUTTINGER-LIQUID BEHAVIOR OF THE NORMAL METALLIC STATE OF THE 2D HUBBARD-MODEL [J].

ANDERSON, PW .

PHYSICAL REVIEW LETTERS, 1990, 64 (15) :1839-1841

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

AROVAS, DP ;

AUERBACH, A .

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

[3] EXPERIMENTAL-EVIDENCE FOR THE HALDANE GAP IN A SPIN-1, NEARLY ISOTROPIC, ANTIFERROMAGNETIC CHAIN [J].

BUYERS, WJL ;

MORRA, RM ;

ARMSTRONG, RL ;

HOGAN, MJ ;

GERLACH, P ;

HIRAKAWA, K .

PHYSICAL REVIEW LETTERS, 1986, 56 (04) :371-374

[4]

COLEMAN P, 1987, PHYS REV B, V35, P3702

[5]

desCloizeaux J., 1962, PHYS REV, V128, P2131, DOI DOI 10.1103/PHYSREV.128.2131

[6] ABSENCE OF THE HOPF INVARIANT IN THE LONG-WAVELENGTH ACTION OF TWO-DIMENSIONAL QUANTUM ANTIFERROMAGNETS [J].

DOMBRE, T ;

READ, N .

PHYSICAL REVIEW B, 1988, 38 (10) :7181-7183

[7] O(3) NONLINEAR SIGMA-MODEL AND THE TOPOLOGICAL DISTINCTION BETWEEN INTEGER-SPIN AND HALF-INTEGER-SPIN ANTIFERROMAGNETS IN 2 DIMENSIONS [J].

HALDANE, FDM .

PHYSICAL REVIEW LETTERS, 1988, 61 (08) :1029-1032

[8] CONTINUUM DYNAMICS OF THE 1-D HEISENBERG ANTI-FERROMAGNET - IDENTIFICATION WITH THE O(3) NON-LINEAR SIGMA-MODEL [J].

HALDANE, FDM .

PHYSICS LETTERS A, 1983, 93 (09) :464-468

[9] NON-LINEAR FIELD-THEORY OF LARGE-SPIN HEISENBERG ANTI-FERROMAGNETS - SEMI-CLASSICALLY QUANTIZED SOLITONS OF THE ONE-DIMENSIONAL EASY-AXIS NEEL STATE [J].

HALDANE, FDM .

PHYSICAL REVIEW LETTERS, 1983, 50 (15) :1153-1156

[10]

KENNEDY T, 1988, J STAT PHYS, V53, P108

← 1 2 3 →