The ballistic electron transport characteristics of hyperbolic Pöschl-Teller double-barrier resonant tunneling structures are investigated. The transmission coefficient and the current density-voltage characteristic in electrically biased one dimensional hyperbolic Pöschl-Teller double-barrier structures with different structure parameters have been calculated by using non-equilibrium Green’s function method. Results for the transmission coefficients and the current densities are compared with the barrier shapes. The results show that the widths of the wells and heights of barriers have a significant effect on the transmission properties. The current density-voltage characteristic presents N-type negative differential resistance.

研究了双曲Pöschl-Teller双势垒共振隧穿结构的弹道电子输运特性。采用非平衡格林函数法，计算了具有不同结构参数的一维双曲双电Pöschl-Teller双势垒结构的传输系数和电流密度-电压特性。将传输系数和电流密度的结果与势垒形状进行比较。结果表明，阱的宽度和势垒的高度对传输特性有重要影响。电流密度-电压特性呈现N型负差分电阻。