Variable behavior of the current exponent in a microscopic nucleation model for electromigration

Authors
Tammaro, M Setlik, B
Citation
M. Tammaro et B. Setlik, Variable behavior of the current exponent in a microscopic nucleation model for electromigration, J APPL PHYS, 85(10), 1999, pp. 7127-7129
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF APPLIED PHYSICS
ISSN journal
00218979 → ACNP
Volume
85
Issue
10
Year of publication
1999
Pages
7127 - 7129
Database
ISI
SICI code
0021-8979(19990515)85:10<7127:VBOTCE>2.0.ZU;2-D
Abstract
A microscopic nucleation model for electromigration on a lattice is propose d. The solution of the master equations for site occupancy produces a varia ble current exponent with 1<n<2. These results disprove previous claims tha t n=2 in nucleation models. We show that n=2 is the limiting behavior of al l nucleation models and argue that physical regimes exist where the deviati on from n=2 is significant. (C) 1999 American Institute of Physics. [S0021- 8979(99)05410-9].