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首页> 外文期刊>Physica, B. Condensed Matter >Probing the ground state of Gd2Sn2O7 through mu SR measurements
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Probing the ground state of Gd2Sn2O7 through mu SR measurements

机译：通过mu SR测量探查Gd2Sn2O7的基态

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摘要

We present mu SR data recorded on a newly prepared sample of the geometrically frustrated magnetic material Gd2Sn2O7. These data confirm previously published results and clearly show that there is a dynamical component in the ground state. This seems in contrast to the result of the linear spin-wave calculation of A.G. Del Maestro and M.J.P. Gingras which predicts the spin-waves to be gapped over the whole first Brillouin zone with a gap larger than about 1.0 K in temperature scale. The measured high-temperature paramagnetic spin dynamics is understood with a simple model. The conditions for observing a spontaneous magnetic field and a finite relaxation rate at low temperature are discussed in terms of the properties of a function which measures the density of fluctuation modes.
机译：我们提供了在几何受阻的磁性材料Gd2Sn2O7的新制备样品上记录的mu SR数据。这些数据证实了以前发表的结果，并清楚地表明在基态中存在动力成分。这似乎与A.G. Del Maestro和M.J.P.的线性自旋波计算结果相反。 Gingras预测自旋波将在整个第一布里渊区带隙，温度范围的间隙大于约1.0K。通过简单的模型可以了解所测得的高温顺磁性自旋动力学。根据测量波动模式密度的函数的性质，讨论了在低温下观察自发磁场和有限松弛率的条件。

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