磁梭装置中的库仑促进自旋力学
Coulomb-promoted spintromechanics in magnetic shuttle devices
摘要：
磁梭装置中的可移动点（“梭”）上的交换力取决于穿梭电子数量的奇偶性。因此，可以通过改变库仑相关的强度$U$来调节这种设备的性能，以阻止或解除阻止奇偶性波动。我们表明，通过增加$U$的自旋力学的设备跨越，在$U=U_c(T)$，从一个机械稳定的制度，自旋诱导穿梭不稳定性的制度。这是由于增强的自旋相关的机械力的宇称波动减少了隧道的库仑阻塞，并表明单电子操纵单自旋控制的纳米力学是可能的。
英文摘要：
Exchange forces on the movable dot ("shuttle") in a magnetic shuttle device depend on the parity of the number of shuttling electrons. The performance of such a device can therefore be tuned by changing the strength $U$ of Coulomb correlations to block or unblock parity fluctuations. We show that by increasing $U$ the spintro-mechanics of the device crosses over, at $U=U_c(T)$, from a mechanically stable regime to a regime of spin-induced shuttle instabilities. This is due to enhanced spin-dependent mechanical forces as parity fluctuations are reduced by a Coulomb blockade of tunneling and demonstrates that single-electron manipulation of single-spin controlled nano-mechanics is possible.
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