Probing momentum distributions in magnetic tunnel junctions via hot-electron decay
Probing momentum distributions in magnetic tunnel junctions via hot-electron decay
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DOI：
10.1063/1.2737128
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发表时间：
2007-05
影响因子：
4
通讯作者：
R. Jansen;T. Banerjee;Byong‐Guk Park;J. Lodder
中科院分区：
文献类型：
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作者：
R. Jansen;T. Banerjee;Byong‐Guk Park;J. Lodder
采用热电子衰减对隧道动量分布敏感的三端晶体管结构，通过分析隧道后Co金属阳极中热电子的衰减来探测磁性隧道结中的隧道动量分布。比较了固态非晶Al_2O_3势垒和扫描隧道显微镜真空势垒。对于前者，在名义上相同的Co的衰减长度是惊人的大的2倍，这意味着更各向同性的隧道动量分布的Al2O3障碍。
The tunnel momentum distribution in a magnetic tunnel junction is probed by analyzing the decay of the hot electrons in the Co metal anode after tunneling, using a three-terminal transistor structure in which the hot-electron attenuation is sensitive to the tunnel momentum distribution. Solid state amorphous Al2O3 barriers and the vacuum barrier of a scanning tunneling microscope are compared. For the former the attenuation length in nominally the same Co is strikingly larger factor of 2, implying a more isotropic tunnel momentum distribution for Al2O3 barriers.