Controlling the Flow of Spin and Charge in Nanoscopic Topological Insulators
arXiv:1509.08467 · doi:10.1103/PhysRevB.93.081401
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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Cited by in corpus (6)
- Tunable edge states and their robustness towards disorder
- Nontrivial interplay of strong disorder and interactions in quantum spin-Hall insulators doped with dilute magnetic impurities
- Effects of Defects and Dephasing on Charge and Spin Currents in Two-Dimensional Topological Insulators
- Low-energy electronic properties of Weyl semimetal quantum dot
- Transport through a quantum spin Hall antidot as a spectroscopic probe of spin textures
- Controlling the real-time dynamics of a spin coupled to the helical edge states of the Kane-Mele model