Spin-1 antiferromagnetic interaction in the coupled Heisenberg chains

被引：3
|
作者：
Song, Z
机构：
[1] Department of Physics, Nankai University
来源：
PHYSICS LETTERS A | 1997年 / 231卷 / 1-2期
关键词：
D O I：
10.1016/S0375-9601(97)00269-7
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A 2 x L system of coupled spin-1/2 Heisenberg chains is studied in the framework of variational approach. An effective Hamiltonian is derived explicitly in terms of two spin-1 degrees of freedom of a cluster of L sites. The spin gap is calculated numerically for the systems of two coupled chains with periodic boundary condition. Our results are close to that of the density matrix renormalization group study. It is suggested that there exists a spin-1 antiferromagnetic interaction in such system. (C) 1997 Elsevier Science B.V.
引用
收藏
页码：135 / 138
页数：4
相关论文
共 50 条
  • [1] Spin-1 antiferromagnetic interaction in the coupled Heisenberg chains
    Department of Physics, Nankai University, Tianjin 300071, China
    [J]. Phys Lett Sect A Gen At Solid State Phys, 1-2 (135-138):
  • [2] Entanglement of spin-1/2 Heisenberg antiferromagnetic quantum spin chains
    da Silva, Saulo Luis Lima
    [J]. QUANTUM STUDIES-MATHEMATICS AND FOUNDATIONS, 2019, 6 (01) : 27 - 34
  • [3] Spin-1 antiferromagnetic Heisenberg chains in an external staggered field
    Ercolessi, E
    Morandi, G
    Pieri, P
    Roncaglia, M
    [J]. PHYSICAL REVIEW B, 2000, 62 (22) : 14860 - 14870
  • [4] Role of the spin anisotropy of the interchain interaction in weakly coupled antiferromagnetic Heisenberg chains
    Fan, Yuchen
    Yu, Rong
    [J]. CHINESE PHYSICS B, 2020, 29 (05)
  • [5] Role of the spin anisotropy of the interchain interaction in weakly coupled antiferromagnetic Heisenberg chains
    樊宇辰
    俞榕
    [J]. Chinese Physics B, 2020, (05) : 572 - 576
  • [6] Quantum entanglement in trimer spin-1/2 Heisenberg chains with antiferromagnetic coupling
    Cima O.M.D.
    Franco D.H.T.
    da Silva S.L.L.
    [J]. Quantum Studies: Mathematics and Foundations, 2016, 3 (1) : 57 - 63
  • [7] Entanglement in spin-1 Heisenberg chains
    Wang, XG
    Li, HB
    Sun, Z
    Li, YQ
    [J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 2005, 38 (40): : 8703 - 8713
  • [8] Excitation of spin waves by tunneling electrons in ferromagnetic and antiferromagnetic spin-1/2 Heisenberg chains
    Gauyacq, J. P.
    Lorente, N.
    [J]. PHYSICAL REVIEW B, 2011, 83 (03):
  • [9] EFFECT OF SPIN-1/2 IMPURITY ON SPIN-1 ANTIFERROMAGNETIC HEISENBERG CHAIN
    KABURAGI, M
    TONEGAWA, T
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1994, 63 (02) : 420 - 424
  • [10] A NUMERICAL STUDY OF SPIN-1/2 ALTERNATING ANTIFERROMAGNETIC HEISENBERG LINEAR-CHAINS
    OKAMOTO, K
    NISHIMORI, H
    TAGUCHI, Y
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1986, 55 (05) : 1458 - 1465
12345