ANALYTIC SOLUTION OF TRAP-CONTROLLED TRACER DIFFUSION IN AMORPHOUS SOLIDS

被引：27

作者：

KEMP, M ^{[1
]}

BRANZ, HM ^{[1
]}

机构：

[1] NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.47.7067

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We solve the equations of trap-controlled tracer diffusion in amorphous solids in the case of constant empty-trap density. We show that the early-time tracer profiles develop exponential wings whose widths are given by the mean atomic displacement between trapping events. The wing amplitude increases linearly with time. In the long-time limit, the solutions are identical to the trap-free case, but with an effective diffusion coefficient that can be calculated from features of the early-time tracer profiles.

引用

页码：7067 / 7070

页数：4

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