Electron Transport Through Novel Nanoelectronic and Spintronic Devices

The author started his career at Indiana University in the Physics Department where he earned his Bachelors of Physics in the fall of 2010. He then attended Ball State University where he earned his Masters of Science in 2012. He currently teaches at Ivy Tech in Fort Wayne, Indiana and continues his research with AB-Rings.

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.