Magnetism and magnetotransport studies in Ge0.9Mn0.1Te
Magnetism and magnetotransport studies in Ge0.9Mn0.1Te
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DOI：
10.1063/1.3548829
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发表时间：
2011-03
影响因子：
3.2
通讯作者：
S. Lim;J. Bi;K. Teo;T. Liew
中科院分区：
文献类型：
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作者：
S. Lim;J. Bi;K. Teo;T. Liew
本文研究了分子束外延生长的Ge1-xMnxTe （x = 0.1）的磁性和磁输运性质。结果表明，样品在TC = 34 K和TC* = 100 K处表现出两个铁磁转变温度。由于有足够的载流子产生均匀的铁磁性，我们推断Tc是一种远程铁磁性有序，而Tc *由于铁磁性团簇而是一种短程铁磁性有序。电阻率ρ(T)曲线的温度依赖性在TC附近有一个浅的最小值。ρ(T)向低温（ttc）上升，声子散射占主导地位。
We have investigated the magnetic and magnetotransport properties of Ge1-xMnxTe (x = 0.1) grown by molecular-beam epitaxy. Our results show that the sample exhibits two ferromagnetic transition temperatures at TC = 34 K and TC* = 100 K. We infer that Tc is a long-range ferromagnetic ordering in view of sufficient carriers generating uniform ferromagnetism, whereas TC* is a short-range ferromagnetic ordering due to ferromagnetic clusters. The temperature dependence of the resistivity ρ(T) curve exhibits a shallow minimum near TC. The upturn of ρ(T) toward the low temperature (T TC), the phonon scattering dominates.