Document Type
Article
Original Publication Date
2008
Journal/Book/Conference Title
Journal of Applied Physics
Volume
104
Issue
1
DOI of Original Publication
10.1063/1.2951448
Date of Submission
November 2015
Abstract
Since spin and charge are both carried by electrons (or holes) in a solid, it is natural to assume that charge and spin diffusion coefficients will be the same. Drift-diffusion models of spin transport typically assume so. Here, we show analytically that the two diffusion coefficients can be vastly different in quantum wires. Although we do not consider quantum wells or bulk systems, it is likely that the two coefficients will be different in those systems as well. Thus, it is important to distinguish between them in transportmodels, particularly those applied to quantum wire based devices.
Rights
Pramanik, S., Bandyopadhyay, S., & Cahay, M. The inequality of charge and spin diffusion coefficients. Journal of Applied Physics, 104, 014304 (2008). Copyright © 2008 American Institute of Physics.
Is Part Of
VCU Electrical and Computer Engineering Publications
Comments
Originally published at http://dx.doi.org/10.1063/1.2951448