势垒的非对称性对隧穿几率的影响

The Effect of Asymmetric Barriers on Tunneling Probability

在有效质量近似的框架下,应用传递矩阵理论研究了势垒的非对称性对单电子隧穿几率的影响.结果表明:隧穿过程的势垒的形状对隧穿几率影响很大,势垒的对称性破坏的越严重,在低能区域发生共振隧穿的可能性越小.这些可以为设计和制造更加优化的共振隧穿器件提供一定的理论指导.

In this work, we calculated the tunneling probability of a single electron tunneling in a series of asymmetric barriers using the transfer matrix technique in the framework of effective mass approximation. Our results show that the potential barrier is more asymmetric and the resonant peak is less apparent. We hope our calculations can help to design optimum resonant- tunneling systems in the further experiment.