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Strong spin-dependent negative differential resistance in composite graphene superlattices

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2013

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Munárriz, Javier
Gaul, Christopher
Malyshev, Andrey V.
Orellana, P. A.
Domínguez-Adame, Francisco

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http://nbn-resolving.de/urn:nbn:de:bsz:352-269993
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https://doi.org/10.1103/PhysRevB.88.155423
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Physical Review B. 2013, 88(15). ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.88.155423

Zusammenfassung

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.

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ISO 690MUNÁRRIZ, Javier, Christopher GAUL, Andrey V. MALYSHEV, P. A. ORELLANA, Cord A. MÜLLER, Francisco DOMÍNGUEZ-ADAME, 2013. Strong spin-dependent negative differential resistance in composite graphene superlattices. In: Physical Review B. 2013, 88(15). ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.88.155423
BibTex
@article{Munarriz2013Stron-26999,
  year={2013},
  doi={10.1103/PhysRevB.88.155423},
  title={Strong spin-dependent negative differential resistance in composite graphene superlattices},
  number={15},
  volume={88},
  issn={1098-0121},
  journal={Physical Review B},
  author={Munárriz, Javier and Gaul, Christopher and Malyshev, Andrey V. and Orellana, P. A. and Müller, Cord A. and Domínguez-Adame, Francisco}
}
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