The effect of pulse-modulated surface acoustic waves on acoustoelectric current quantization
The effect of pulse-modulated surface acoustic waves on acoustoelectric current quantization
复制标题
脉冲调制声表面波对声电流量子化的影响
DOI：
10.1063/1.2349487
复制
发表时间：
2006
影响因子：
3.2
通讯作者：
M. Pepper
中科院分区：
文献类型：
--
作者：
M. Kataoka;C. Ford;C. Barnes;Donald M. Anderson;G. Jones;H. Beere;D. Ritchie;M. Pepper
研究了声表面波(SAW)的脉冲调制对一维通道中声电电流量子化的影响。我们发现，脉冲调制有效地消除了串扰的影响，以及与反射锯波相关的问题，这些问题是通道中不可控的电势波动的来源。这种方法的缺点是实现串扰消除所需的短脉冲长度(<；650 ns)降低了量化电流平台的质量。我们计算了作为换能器功率的函数的换能器通带和声电电流的校准所得到的预期电流，并且发现了类似的行为。
The effect of pulse modulation of surface acoustic waves (SAWs) on the acoustoelectric current quantization through a one-dimensional channel is investigated. We found that the pulse modulation is effective in eliminating the effects of cross-talk and problems associated with reflected SAWs that are the sources of uncontrollable potential fluctuations in the channel. The drawback of this method is that the short pulse length (<650ns) required to achieve cross-talk elimination degrades the quality of the quantized current plateaus. We calculate the expected current from calibrations of the transducer passband and acoustoelectric current as a function of transducer power and find similar behavior.