Spin dynamics of SrCu2O3 and the Heisenberg ladder

被引：53
作者：
Sandvik, AW
Dagotto, E
Scalapino, DJ
机构：
[1] FLORIDA STATE UNIV, DEPT PHYS, TALLAHASSEE, FL 32306 USA
[2] UNIV CALIF SANTA BARBARA, DEPT PHYS, SANTA BARBARA, CA 93106 USA
来源：
PHYSICAL REVIEW B | 1996年 / 53卷 / 06期
关键词：
D O I：
10.1103/PhysRevB.53.R2934
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The S=1/2 Heisenberg antiferromagnet in the ladder geometry is studied as a model for the spin degrees of freedom of SrCu2O3. The susceptibility and the spin-echo decay rate are calculated using a quantum Monte Carlo technique, and the spin-lattice relaxation rate is obtained by maximum-entropy analytic continuation of imaginary-time correlation functions. All calculated quantities are in reasonable agreement with experimental results for SrCu2O3 if the exchange coupling J approximate to 850 K. However, for the susceptibility fit an anomalously low factor is required.
引用
收藏
页码：R2934 / R2937
页数：4
相关论文
共 23 条
  • [1] OBSERVATION OF A SPIN GAP IN SRCU2O3 COMPRISING SPIN-1/2 QUASI-1D 2-LEG LADDERS
    AZUMA, M
    HIROI, Z
    TAKANO, M
    ISHIDA, K
    KITAOKA, Y
    [J]. PHYSICAL REVIEW LETTERS, 1994, 73 (25) : 3463 - 3466
  • [2] SUSCEPTIBILITY AND EXCITATION SPECTRUM OF (VO)2P2O7 IN LADDER AND DIMER-CHAIN MODELS
    BARNES, T
    RIERA, J
    [J]. PHYSICAL REVIEW B, 1994, 50 (10) : 6817 - 6822
  • [3] EXCITATION SPECTRUM OF HEISENBERG SPIN LADDERS
    BARNES, T
    DAGOTTO, E
    RIERA, J
    SWANSON, ES
    [J]. PHYSICAL REVIEW B, 1993, 47 (06) : 3196 - 3203
  • [4] SUPERCONDUCTIVITY IN LADDERS AND COUPLED PLANES
    DAGOTTO, E
    RIERA, J
    SCALAPINO, D
    [J]. PHYSICAL REVIEW B, 1992, 45 (10): : 5744 - 5745
  • [5] EGGERT S, IN PRESS PHYS REV B
  • [6] SPIN LADDERS WITH SPIN GAPS - A DESCRIPTION OF A CLASS OF CUPRATES
    GOPALAN, S
    RICE, TM
    SIGRIST, M
    [J]. PHYSICAL REVIEW B, 1994, 49 (13): : 8901 - 8910
  • [7] QUANTUM MONTE-CARLO SIMULATIONS AND MAXIMUM-ENTROPY - DYNAMICS FROM IMAGINARY-TIME DATA
    GUBERNATIS, JE
    JARRELL, M
    SILVER, RN
    SIVIA, DS
    [J]. PHYSICAL REVIEW B, 1991, 44 (12): : 6011 - 6029
  • [8] GUBERNATIS JE, UNPUB
  • [9] A NEW HOMOLOGOUS SERIES SRN-1CUN+1O2N FOUND IN THE SRO-CUO SYSTEM TREATED UNDER HIGH-PRESSURE
    HIROI, Z
    AZUMA, M
    TAKANO, M
    BANDO, Y
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 1991, 95 (01) : 230 - 238
  • [10] SPIN GAP BEHAVIOR IN LADDER-TYPE OF QUASI-ONE-DIMENSIONAL SPIN (S=1/2) SYSTEM SRCU2O3
    ISHIDA, K
    KITAOKA, Y
    ASAYAMA, K
    AZUMA, M
    HIROI, Z
    TAKANO, M
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1994, 63 (09) : 3222 - 3225
123