Spin persistence in an antiferromagnetic triangular Ising lattice under a magnetic field

Spin persistence in an antiferromagnetic triangular Ising lattice under a magnetic field
复制标题

磁场下反铁磁三角伊辛晶格中的自旋持久性

DOI:
10.1103/physrevb.76.024435
复制
发表时间:
2007-07
期刊:
影响因子:
3.7
通讯作者:
--
中科院分区:
物理与天体物理2区
文献类型:
--
作者:

文献摘要

参考文献

被引文献

相似文献

为了理解低温受挫磁系统(如Ca3Co2O6化合物)中经常观察到的阶梯状磁化行为,我们用蒙特卡罗模拟方法研究了磁场作用下淬火的反铁磁有序二维三角伊辛晶格的自旋持续效应。证明了自旋阻挡与磁化步骤之间的一一对应关系,表明自旋受挫冻结对阶跃磁化行为的本质贡献。结果表明,在几个临界磁场上发生的磁化强度阶跃是由这些磁场上的自旋阻挡被强烈抑制所激活的。我们详细地研究了自旋持续几率和相应的自旋组态随磁场的动态演化,结果表明,由自旋反转引起的能量变化所决定的自旋活跃程度导致了磁化的阶跃行为。这项工作对Ca3Co2O6化合物在低温下的阶梯磁化现象提出了合理的解释。
In order to understand the steplike magnetization behaviors often observed in frustrated magnetic systems (e.g., Ca3Co2O6 compound) at low temperature, we study the spin persistence effect of quenched two-dimensional triangular Ising lattice of antiferromagnetic order under magnetic field, using Monte Carlo simulations. The one-to-one correspondence between the spin blockings and magnetization steps is demonstrated, indicating the essential contribution of the spin frustration freezing to the steplike magnetization behavior. It is revealed that the steplike jumps of the magnetization occurring at several critical magnetic fields are activated by drastic suppression of the spin blocking at these fields. We investigate in detail the dynamic evolution of the spin persistence probability and corresponding spin configuration as a function of magnetic field, and it is indicated that the degree of spin activeness as determined by the energy change due to spin flips induces the stepwise behavior of the magnetization. This work presents a sound explanation to the steplike magnetization of Ca3Co2O6 compound at low temperature.
DOI: 10.1039/b316717h
发表时间: 2004-03
影响因子: --
作者:
A. Maignan;V. Hardy;Sylvie Hébert;M. Drillon;M R Lees;O. Petrenko;D. Paul;D. Khomskii
通讯作者: A. Maignan;V. Hardy;Sylvie Hébert;M. Drillon;M R Lees;O. Petrenko;D. Paul;D. Khomskii
DOI: 10.1103/physrevlett.91.030602
发表时间: 2003-02
影响因子: 8.6
作者:
S. Majumdar;A. Bray
通讯作者: S. Majumdar;A. Bray
DOI: 10.1103/physreve.73.025701
发表时间: 2005-12
期刊: Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子: --
作者:
S. Jain;H. Flynn
通讯作者: S. Jain;H. Flynn
DOI: 10.1103/physreve.59.r2493
发表时间: 1999-03
期刊: Physical Review E
影响因子: 2.4
作者:
S. Jain
通讯作者: S. Jain
DOI: 10.1103/physrevlett.82.3944
发表时间: 1999-04
影响因子: 8.6
作者:
C. Newman;D. Stein
通讯作者: C. Newman;D. Stein