Correlations and Neel order of randomly diluted quantum spin ladders

被引:25
作者
Greven, M [1 ]
Birgeneau, RJ
机构
[1] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
[2] Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA
[3] MIT, Dept Phys, Cambridge, MA 02139 USA
关键词
D O I
10.1103/PhysRevLett.81.1945
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present a Monte Carlo study of the correlation length xi of randomly diluted antiferromagnetic spin-1/2 two-chain Heisenberg ladders with weak and intermediate interchain couplings, J/J less than or equal to 1. We are able to access the experimentally relevant low-temperature regime, T/J approximate to 1/500, and find (i) that the form xi(z, T) = A(z) + B(z)T-v, with v = 0.40(5), describes our data at low and moderate dilution z and up to rather high temperatures, (ii) evidence for scaling of xi J/J in the variable zJ/J at weak J/J, (iii) an enhancement of correlations that is strongest for a fraction z approximate to J/(8J) of dilutants, and (iv) that the Neel temperature of Sr(Cu1-xZnz)(2)O-3 corresponds well to a curve of constant correlation length xi = 18(2) of the single diluted ladder with J/J less than or equal to 1/2.
引用
收藏
页码:1945 / 1948
页数:4
相关论文
共 29 条
  • [1] THE HALDANE-GAP IN ANTIFERROMAGNETIC HEISENBERG-CHAINS
    AFFLECK, I
    [J]. REVIEWS IN MATHEMATICAL PHYSICS, 1994, 6 (5A) : 887 - 899
  • [2] Electronic structures of Sr14-xCaxCu24O41
    Arai, M
    Tsunetsugu, H
    [J]. PHYSICAL REVIEW B, 1997, 56 (08) : R4305 - R4308
  • [3] Switching of the gapped singlet spin-liquid state to an antiferromagnetically ordered state in Sr(Cu1-xZnx)(2)O-3
    Azuma, M
    Fujishiro, Y
    Takano, M
    Nohara, M
    Takagi, H
    [J]. PHYSICAL REVIEW B, 1997, 55 (14) : R8658 - R8661
  • [4] Metal theory
    Bethe, H.
    [J]. ZEITSCHRIFT FUR PHYSIK, 1931, 71 (3-4): : 205 - 226
  • [5] Ferromagnetic moment and spin rotation transitions in tetragonal antiferromagnetic Sr2Cu3O4Cl2
    Chou, FC
    Aharony, A
    Birgeneau, RJ
    EntinWohlman, O
    Greven, M
    Harris, AB
    Kastner, MA
    Kim, YJ
    Kleinberg, DS
    Lee, YS
    Zhu, Q
    [J]. PHYSICAL REVIEW LETTERS, 1997, 78 (03) : 535 - 538
  • [6] Surprises on the way from one- to two-dimensional quantum magnets: The ladder materials
    Dagotto, E
    Rice, TM
    [J]. SCIENCE, 1996, 271 (5249) : 618 - 623
  • [7] ECCLESTON RS, CONDMAT9711053
  • [8] CLUSTER ALGORITHM FOR VERTEX MODELS
    EVERTZ, HG
    LANA, G
    MARCU, M
    [J]. PHYSICAL REVIEW LETTERS, 1993, 70 (07) : 875 - 879
  • [9] NMR study of Zn doping effect in spin ladder system SrCu2O3
    Fujiwara, N
    Yasuoka, H
    [J]. PHYSICAL REVIEW LETTERS, 1998, 80 (03) : 604 - 607
  • [10] NEUTRON-SCATTERING STUDY OF THE 2-DIMENSIONAL SPIN S=1/2 SQUARE-LATTICE HEISENBERG-ANTIFERROMAGNET SR2CUO2CL2
    GREVEN, M
    BIRGENEAU, RJ
    ENDOH, Y
    KASTNER, MA
    MATSUDA, M
    SHIRANE, G
    [J]. ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1995, 96 (04): : 465 - 477