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Fem for Schrödinger equation with Rashba effect

✍ Scribed by Yuu Miyagawa; Tsuyoshi Ueta

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
219 KB
Volume
218
Category
Article
ISSN
0377-0427

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✦ Synopsis

A finite element method for treating two-dimensional electron systems with Rashba spin-orbit interaction is developed. The Rashba spin-orbit interaction removes spin degeneracy, so that each spin contributes to the conductance differently. By accounting for the connection between a system and leads, this method yields the conductance of a nanoscale quantum device for each spin state. As an example, this calculation method is applied to a model of a quantum point contact. The results of this calculation indicate conductance quantization and a large spin polarization. We discuss the estimated accuracies of this calculation.

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