Details

SPIN INJECTION ACROSS A FERROMAGNET / SEMICONDUCTING NANOWIRE INTERFACE

by UPPALURI, SIRISHA

Abstract (Summary)
Spin injection across the interface between a non-ideal ferromagnet and a semiconductor quantum wire is analyzed while taking into account the effects of Rashba spin orbit interaction in the wire and a uniform magnetic field in direction of current flow. We show that the interface can act as an ideal spin filter allowing injection only from the majority spin band of the ferromagnet. This is possible at very low temperatures and for certain injection energies. Below a critical value of this magnetic field, there are two injection energies for which such ideal spin filtering is possible; above the critical field there is only one such injection energy.
Bibliographical Information:

Advisor:

School:University of Cincinnati

School Location:USA - Ohio

Source Type:Master's Thesis

Keywords:

ISBN:

Date of Publication:01/01/2005

© 2009 OpenThesis.org. All Rights Reserved.