Mixed Heisenberg chains .1. The ground-state problem

被引：81

作者：

Niggemann, H

Uimin, G

Zittartz, J

机构：

[1] Inst. für Theoretische Physik, Universität zu Köln, D-50937 Köln

[2] Landau Inst. for Theoretical Physics, Chernogolovka

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1997年 / 9卷 / 42期

关键词：

D O I：

10.1088/0953-8984/9/42/017

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We consider a mechanism for competing interactions in alternating Heisenberg spin chains due to the formation of local spin-singlet pairs. The competition of spin-1 and spin-0 states reveals hidden Ising symmetry of such alternating chains.

引用

页码：9031 / 9042

页数：12

共 17 条

[1]

ALCARAZ FC, 1997, IN PRESS J PHYS A

[2]

BREHMER S, 1996, CONDMAT9610109

[3] NEW INTEGRABLE QUANTUM CHAINS COMBINING DIFFERENT KINDS OF SPINS [J].

DEVEGA, HJ ;

WOYNAROVICH, F .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1992, 25 (17) :4499-4516

[4] Finite-size corrections of an integrable chain with alternating spins [J].

Dorfel, BD ;

Meissner, S .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1997, 30 (06) :1831-1841

[5] LOW-TEMPERATURE ANALYSIS OF THE AXIAL NEXT-NEAREST NEIGHBOR ISING-MODEL NEAR ITS MULTIPHASE POINT [J].

FISHER, ME ;

SELKE, W .

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1981, 302 (1463) :1-44

[6] INFINITELY MANY COMMENSURATE PHASES IN A SIMPLE ISING-MODEL [J].

FISHER, ME ;

SELKE, W .

PHYSICAL REVIEW LETTERS, 1980, 44 (23) :1502-1505

[7] Magnetic and critical properties of alternating spin chain with S=1/2, 1 in magnetic fields [J].

Fujii, M ;

Fujimoto, S ;

Kawakami, N .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1996, 65 (08) :2381-2384

[8] GENERALIZED WIGNER LATTICES IN ONE DIMENSION AND SOME APPLICATIONS TO TETRACYANOQUINODIMETHANE (TCNQ) SALTS [J].

HUBBARD, J .

PHYSICAL REVIEW B, 1978, 17 (02) :494-505

[9] EXACT DIAGONALIZATIONS OF OPEN SPIN-1 CHAINS [J].

KENNEDY, T .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (26) :5737-5745

[10] Matrix-product-states approach to Heisenberg ferrimagnetic spin chains [J].

Kolezhuk, AK ;

Mikeska, HJ ;

Yamamoto, S .

PHYSICAL REVIEW B, 1997, 55 (06) :R3336-R3339

← 1 2 →