论文标题
异质结构纳米ip的现场电子排放中的库仑封锁和量子限制
Coulomb blockade and quantum confinement in field electron emission from heterostructured nanotips
论文作者
论文摘要
对于由量子点和纳米线组成的异质结构发射器，揭示了一种新的场电子发射（FE）机制，其中包括库仑阻塞和量子限制效应，该机制被揭示出来的异质结构发射器。发射电子的总能量分布显示归因于量子限制的发射极的离散电子状态的多个峰，其相应的能级随着库隆阻滞而振荡的相应能级振荡。 FE电流电压特性具有改良的库仑楼梯，随着电压的增加，其他步骤变得更加明显。实验观察到的行为与基于量子点中库仑阻断模型的数值模拟一致，并结合了尖端的Fe理论。
A new field electron emission (FE) mechanism, which includes Coulomb blockade and quantum confinement effects, is revealed for heterostructured emitters composed of quantum dots and nanowires self-assembled at diamond nanotips. The total energy distributions of the emitted electrons show multiple peaks attributed to the discrete electronic states of the quantum-confined emitter with the corresponding energy levels oscillating as a function of the applied voltage due to the Coulomb blockade. The FE current-voltage characteristics exhibit a modified Coulomb staircase with additional steps becoming more pronounced with increasing voltage. The experimentally observed behavior is consistent with numerical simulations based on the model of Coulomb blockade in quantum dots in combination with the theory of FE from sharp tips.
