Current rectification by Pauli exclusion in a weakly coupled double quantum dot system
Current rectification by Pauli exclusion in a weakly coupled double quantum dot system
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DOI：
10.1126/science.1070958
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发表时间：
2002-08-23
期刊：
影响因子：
56.9
通讯作者：
Tarucha, S
中科院分区：
文献类型：
--
作者：
Ono, K;Austing, DG;Tarucha, S
当两个相同自旋电子在每个点中占据最低能态时，我们在耦合量子点系统的隧道特性中观察到由于泡利排斥而导致的自旋封锁。当两个点的电子数量不对称时，自旋封锁仅发生在一个偏压方向，从而导致电流整流。我们通过施加磁场来打开新的自旋三重态载流通道来诱导自旋封锁的崩溃。
We observe spin blockade due to Pauli exclusion in the tunneling characteristics of a coupled quantum dot system when two same-spin electrons occupy the lowest energy state in each dot. Spin blockade only occurs in one bias direction when there is asymmetry in the electron population of the two dots, leading to current recti cation. We induce the collapse of the spin blockade by applying a magnetic field to open up a new spin-triplet current-carrying channel.