Magnetothermodynamics of the spin- 1 / 2 Kagome antiferromagnet
Magnetothermodynamics of the spin- 1 / 2 Kagome antiferromagnet
复制标题
自旋的磁热力学 - 1 / 2 Kagome 反铁磁体
DOI：
--
复制
发表时间：
1999
影响因子：
8.6
通讯作者：
H. Everts
中科院分区：
文献类型：
--
作者：
P. Sindzingre;G. Misguich;C. Lhuillier;B. Bernu;L. Pierre;C. Waldtmann;H. Everts
本文用一种新的混合方法计算了自旋为1/2的Kagome反铁磁体在强磁场作用下的热力学行为。我们发现了T2的低温行为，比热对强磁场的敏感性很低。我们发现明显的证据表明，这种低温磁热效应不仅与低位起伏单态的存在有关，而且整个图景(C(V)的T2行为和热激活的自旋磁化率)暗示了非磁激发和磁激发的贡献。并与实验结果进行了比较。
In this paper, we use a new hybrid method to compute the thermodynamic behavior of the spin- 1 / 2 Kagome antiferromagnet under the influence of a large external magnetic field. We find a T2 low-temperature behavior and a very low sensitivity of the specific heat to a strong external magnetic field. We display clear evidence that this low-temperature magnetothermal effect is associated with the existence of low-lying fluctuating singlets, but also that the whole picture ( T2 behavior of C(v) and the thermally activated spin susceptibility) implies contribution of both nonmagnetic and magnetic excitations. Comparison with experiments is made.