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arXiv · 1509.08467

Controlling the Flow of Spin and Charge in Nanoscopic Topological Insulators

John S. Van Dyke·Dirk K. Morr
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Abstract

Controlling the flow of spin and charge currents in topological insulators (TIs) is a crucial requirement for applications in quantum computation and spin electronics. We demonstrate that such control can be established in nanoscopic two-dimensional TIs by breaking their time reversal symmetry via magnetic defects. This allows for the creation of nearly fully spin-polarized charge currents, and the design of highly tunable spin diodes. Similar effects can also be realized in mesoscale hybrid structures in which TIs interface with ferro- or antiferromagnets.

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John S. Van Dyke, Dirk K. Morr. 2015-09-28. Controlling the Flow of Spin and Charge in Nanoscopic Topological Insulators. https://doi.org/10.1103/physrevb.93.081401

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