论文标题
中心对称skyrmion-lattice磁铁GD2PDSI3中的异常磁化
Anomalous Magnetoresistance in Centrosymmetric Skyrmion-Lattice Magnet Gd2PdSi3
论文作者
论文摘要
我们对GD2PDSI3的磁化和电阻率的温度和场依赖性进行了系统研究，GD2PDSI3是中心对称的Skyrmion晶体。虽然磁化行为与基于易感性的报告相图一致，但我们表明，也可以根据所有特征之间具有一对一的对应关系来构建相图。另外，还确定了进入场诱导的铁磁状态的交叉边界。我们的结果表明，在Néel温度上方的铁磁旋转波动在电阻率异常对磁场的高灵敏度中起关键作用，这表明在这种沮丧的迭代磁铁中，在Skyrmion Lattice的零磁相关和有限波量的不同磁相关的相互作用。
We performed a systematic study of the temperature- and field-dependence of magnetization and resistivity of Gd2PdSi3, which is a centrosymmetric skyrmion crystal. While the magnetization behavior is consistent with the reported phase diagram based on susceptibility, we show that a phase diagram can also be constructed based on the anomalous magnetoresistance with one-to-one correspondence among all the features. In addition, the crossover boundary into the field-induced ferromagnetic state is also identified. Our results suggest that the ferromagnetic spin fluctuations above the Néel temperature play a key role in the high sensitivity of the resistivity anomalies to magnetic field, pointing to the rich interplay of different magnetic correlations at zero and finite wave vectors underlying the skyrmion lattice in this frustrated itinerant magnet.
