对称纳米机电梭中的反冲感应整流电流
Kick-induced rectified current in symmetric nano-electromechanical shuttle
摘要：
我们研究了具有周期性反冲和正弦交流偏置电压的几何对称纳米机电梭中的整流电流。在几何对称性下，整流电流为零，这是由电子通过可移动的梭从源极转移到漏极而产生的。我们研究了通过具有规则运动的对称穿梭机的非零整流电流，其时间平移对称性被破坏。此外，随着反冲强度的增加，梭子的运动在与反冲转子相同的机制下变得混乱，并产生散射电流。指出瞬时电流的时间平移对称性破缺是整流电流操纵的重要作用。
英文摘要：
We have studied the rectified current in a geometrically symmetric nano-electromechanical shuttle with periodic kicks and sinusoidal ac bias voltages. The rectified current is exactly zero under the geometrical symmetry which is generated by the electrons transferred from source to drain electrodes through the movable shuttle. We investigate the nonzero rectified currents through the symmetric shuttle with regular motion of which the time-translational symmetry is broken. The motion of the shuttle, moreover, becomes chaotic with the same mechanism of the kicked rotor and generates the scattered current as increasing kick strength. We point out that the time-translational-symmetry breaking of the instantaneous current is an important role of manipulation of the rectified current.
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