论文标题

通过第一页的途径在随机电阻和隧道网络模型中的当前放松:制度和时间尺度

Current relaxation in the Random Resistor cum Tunneling Network Model through First-Passage route : Regimes and Time-scales

论文作者

Bhattacharya, Somnath

论文摘要

从数值上讲,我们研究了通过第一笔途径的渗透性随机电阻暨隧道网络(RRTN)模型中的散装电流松弛。 RRTN认为在经典的RRN键渗透模型的框架内,在电压阈值上考虑了一个额外的半古典屏障过程。我们确定了放松的不同时间制度和相应的现象学时间尺度,这些时间尺度可以解决不同政权的范围。这些时间尺度以前是在参考文献中确定的。 \ cite {helase-physicaa,aksubh}。我们研究了这些时间尺度的分布,并观察到在热力学极限中存在完美的相关性。我们得出的结论是,存在一个控制RRTN动力学的单个时间尺度。平均第一通道时间.vs的变化。系统尺寸似乎是由于电荷载体通过网络的亚延伸运动所致。

Numerically we study the bulk current relaxation in percolative Random Resistor cum Tunneling Network (RRTN) model through a first-passage route. The RRTN considers an extra semi-classical barrier-crossing process over a voltage threshold within a framework of classical RRN bond percolation model. We identify the different temporal regimes of relaxation and corresponding phenomenological time-scales, which fix up the extents of different regimes. These time-scales were previously identified in refs. \cite{relax-physicaA, aksubh}. We investigate on the distributions of these time-scales and observe that there exists a perfect correlation among them in the thermodynamic limit. We conclude that there exists a single time-scale which controls the RRTN dynamics. The variation of mean first-passage time .vs. system size seems to be due to sub-diffusive motion of charge carrier through the network.

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