Evidence of exchange-induced spin polarization in the magnetic semiconductor EuS
Evidence of exchange-induced spin polarization in the magnetic semiconductor EuS
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DOI：
10.1063/1.1688652
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发表时间：
2004-06-01
影响因子：
3.2
通讯作者：
Fumagalli, P
中科院分区：
文献类型：
--
作者：
Müller, C;Lippitz, H;Fumagalli, P
亚硫酸铕的半导体特性和7/2μ(B)的大自旋矩是其在自旋电子学领域应用的重要前提。然而，较低的居里温度（T-C=16.5 K）将EuS排除在商业应用之外。我们研究了在分子束外延系统中沉积的各种具有不同层数和不同单层厚度的 Co/EuS 多层样品。低温 (10 K) 下的磁光克尔效应测量表明 EuS 和 Co 矩之间存在反铁磁耦合。 (C) 2004 年美国物理研究所。
The semiconducting character and the large spin moment of 7/2 mu(B) of europium sulfite are important preconditions for applications in the field of spintronics. However, the low Curie temperature (T-C=16.5 K) excludes EuS from commercial application. We have studied a variety of Co/EuS multilayer samples deposited in a molecular beam epitaxy system with varying numbers of layers and different single-layer thickness. Magneto-optic Kerr effect measurements at low temperatures (10 K) indicate an antiferromagnetic coupling between EuS and Co moments. (C) 2004 American Institute of Physics.