Analysis of electron transport through novel nanoelectronic and spintronic devices

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dc.contributor.advisor Hedin, Eric R. Cutright, James B. 2012-08-02T13:03:15Z 2012-08-02T13:03:15Z 2012-07-21 2012-07-21
dc.description.abstract In the field of spintronics there is a strong need for an efficient spin-polarizing device. To that end, two basic devices are proposed: a series of Aharonov-Bohm (AB) rings linked in series with intermediate quantum dots (IQD) and the quantum dot spin polarizer (QDSP). In each case the system is built of quantum dots (QD), each of which can be Zeeman split with a tunable external magnetic field. Spin neutral input and output leads are also attached to each system. The Tight Binding Approximation (TBA) is used to model each system. Mathematica is used to solve the systems generated by TBA, so that the transmission or reflection of a system can be evaluated. We find that a series of AB rings provides for wide, energetically separated, spin polarized conduction bands. The QDSP provides physical separation of spin polarized electrons, making a spin polarized base current possible.
dc.description.sponsorship Department of Physics and Astronomy
dc.description.tableofcontents Methods of analysis -- The Aharonov-Bohm ring -- The quantum dot spin-polarizer.
dc.subject.lcsh Spintronics -- Mathematical models.
dc.subject.lcsh Quantum dots -- Mathematical models.
dc.subject.lcsh Electrons -- Polarization -- Mathematical models.
dc.title Analysis of electron transport through novel nanoelectronic and spintronic devices en_US Thesis (M.S.)

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  • Master's Theses [5577]
    Master's theses submitted to the Graduate School by Ball State University master's degree candidates in partial fulfillment of degree requirements.

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