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非对称多势垒可获得比双势垒更大的共振隧穿电流及更良好的峰谷比。通过分析单电子对任意势垒透射的理论模型,建立了任意非对称三势垒模型,研究了不同偏压和温度对透射系数的影响,并得出结论,为进一步设计非对称量子器件提供理论指导。
Asymmetric multi-barrier can obtain a larger resonant tunneling current than the double-barrier and a better peak-to-valley ratio. By analyzing the theoretical model of the transmission of a single electron to any potential barrier, an arbitrary asymmetric three-barrier model is established and the influence of different bias voltages and temperatures on the transmission coefficient is investigated. The conclusion is reached that the theory can be provided for the further design of asymmetric quantum devices guide.