Graphene as a non-magnetic spin current lens
In spintronics, the ability to transport magnetic information often depends on the existence of a spin current traveling between two different magnetic objects acting as the source and probe. A large fraction of this information never reaches the probe and is lost because the spin current tends to t...
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| Veröffentlicht in: | Journal of physics. Condensed matter 2011-05, Vol.23 (17), p.175302-5 |
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| container_issue | 17 |
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| container_title | Journal of physics. Condensed matter |
| container_volume | 23 |
| creator | Guimarães, F S M Costa, A T Muniz, R B Ferreira, M S |
| description | In spintronics, the ability to transport magnetic information often depends on the existence of a spin current traveling between two different magnetic objects acting as the source and probe. A large fraction of this information never reaches the probe and is lost because the spin current tends to travel omnidirectionally. We propose that a curved boundary between a gated and a non-gated region within graphene acts as an ideal lens for spin currents despite being entirely of non-magnetic nature. We show as a proof of concept that such lenses can be utilized to redirect the spin current that travels away from a source onto a focus region where a magnetic probe is located, saving a considerable fraction of the magnetic information that would be otherwise lost. |
| doi_str_mv | 10.1088/0953-8984/23/17/175302 |
| format | Article |
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| ispartof | Journal of physics. Condensed matter, 2011-05, Vol.23 (17), p.175302-5 |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Boundaries Condensed matter Condensed matter: electronic structure, electrical, magnetic, and optical properties Electric current Electronic transport in condensed matter Exact sciences and technology Graphene Lenses Magnetic probes Physics Spin polarized transport Spintronics Transport |
| title | Graphene as a non-magnetic spin current lens |
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