Quantum-well effect in magnetic tunnel junctions with ultrathin single-crystal Fe(100) electrodes
Quantum-well effect in magnetic tunnel junctions with ultrathin single-crystal Fe(100) electrodes
复制标题
超薄单晶 Fe(100) 电极磁隧道结中的量子阱效应
DOI：
10.1063/1.1424068
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发表时间：
2001
影响因子：
4
通讯作者：
E. Tamura
中科院分区：
文献类型：
--
作者：
T. Nagahama;S. Yuasa;Yoshikazu Suzuki;E. Tamura
我们研究了单晶超薄 Fe(100) 电极磁隧道结的隧道光谱。隧道谱显示了微分电导率和微分隧道磁阻的振荡。振荡最大值的位置随着 Fe(100) 电极厚度的变化而系统地移动，表明振荡源自超薄 Fe(100) 电极中的量子阱态。这种效应为我们提供了制造电压控制自旋功能器件的机会。
We studied the tunnel spectra of magnetic tunnel junctions with a single-crystal ultrathin Fe(100) electrode. The tunnel spectra show oscillations of the differential conductivity and the differential tunnel magnetoresistance. The positions of the maxima of the oscillations move systematically with the change in the Fe(100) electrode’s thickness, indicating that the oscillations originate from the quantum-well states in the ultrathin Fe(100) electrode. This effect provides us with an opportunity to create voltage-controlled spin functional devices.