Detection of spin-polarized electrons injected into a two-dimensional electron gas.
Detection of spin-polarized electrons injected into a two-dimensional electron gas.
复制标题
检测注入二维电子气的自旋极化电子。
DOI：
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发表时间：
2002
影响因子：
8.6
通讯作者：
Mark Johnson
中科院分区：
文献类型：
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作者：
P. R. Hammar;Mark Johnson
测量高迁移率 InAs 二维电子气 (2DEG) 中电子的自旋相关平均自由程。铁磁金属/绝缘体/2DEG 结在非局域几何结构的公共通道上制造，并用作自旋注入器和探测器。对于 4.5 K 处自旋轨道本征态的电子，自旋平均自由程和弛豫时间的下限分别为 Lambda(S) > 或 = 4.6 微米和 tau(s) > 或 = 3.8 ps。温度依赖性在 4.5 范围内较弱
The spin-dependent mean-free path of electrons in a high-mobility InAs two-dimensional electron gas (2DEG) is measured. Ferromagnetic metal/insulator/2DEG junctions are fabricated on a common channel in a nonlocal geometry and used as spin injectors and detectors. For electrons in spin-orbit eigenstates at 4.5 K, lower bounds for the spin mean-free path and relaxation time are Lambda(S) > or = 4.6 microm and tau(s) > or = 3.8 ps, respectively. The temperature dependence is weak over the range 4.5