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Munarriz, J. and Gaul, C. and Malyshev, Andrey and Orellana, P. A. and Mueller, C. A. and Domínguez-Adame Acosta, Francisco (2013) Strong spin-dependent negative differential resistance in composite graphene superlattices. Physical Review B, 88 (15). ISSN 0163-1829
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Official URL: http://dx.doi.org/10.1103/PhysRevB.88.155423
Abstract
We find clear signatures of spin-dependent negative differential resistance in compound systems comprising a graphene nanoribbon and a set of ferromagnetic insulator strips deposited on top of it. The periodic array of ferromagnetic strips induces a proximity exchange splitting of the electronic states in graphene, resulting in the appearance of a superlattice with a spin-dependent energy spectrum. The electric current through the device can be highly polarized and both the current and its polarization manifest nonmonotonic dependence on the bias voltage. The device operates therefore as an Esaki spin diode, which opens possibilities to design new spintronic circuits.
Item Type: | Article |
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Additional Information: | © 2013 American Physical Society. |
Uncontrolled Keywords: | Transport, Devices |
Subjects: | Sciences > Physics > Materials |
ID Code: | 27162 |
Deposited On: | 23 Oct 2014 08:53 |
Last Modified: | 12 Feb 2018 18:51 |
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