Properties of (Ga,Mn)As codoped with Li
Properties of (Ga,Mn)As codoped with Li
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DOI：
10.1063/1.4881636
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发表时间：
2014-06
影响因子：
4
通讯作者：
Shohei Miyakozawa;Lin Chen;F. Matsukura;H. Ohno
中科院分区：
文献类型：
--
作者：
Shohei Miyakozawa;Lin Chen;F. Matsukura;H. Ohno
我们用分子束外延技术生长了Li共掺杂的(Ga，Mn)As层，其名义Mn组分高达0.15。用X射线衍射仪、输运、磁化和铁磁共振等测试手段对样品进行了表征。Li共掺杂降低了(Ga，Mn)As的晶格常数和退火后的电阻率。我们发现(Ga，Mn)As：Li的居里温度与(Ga，Mn)As相似，但具有明显的磁矩和面内磁各向异性，表明Li共掺杂对(Ga，Mn)As的磁性有很大的影响。
We grow Li codoped (Ga,Mn)As layers with nominal Mn composition up to 0.15 by molecular beam epitaxy. The layers before and after annealing are characterized by x-ray diffraction, transport, magnetization, and ferromagnetic resonance measurements. The codoping with Li reduces the lattice constant and electrical resistivity of (Ga,Mn)As after annealing. We find that (Ga,Mn)As:Li takes similar Curie temperature to that of (Ga,Mn)As, but with pronounced magnetic moments and in-plane magnetic anisotropy, indicating that the Li codoping has nontrivial effects on the magnetic properties of (Ga,Mn)As.