Understanding the Effect of Twisting Graphene Sheet on Its Magnetoresistance and Spin Filtration Properties View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2017-12

AUTHORS

Anil Kumar Singh, Sudhanshu Choudhary, Salil Smith

ABSTRACT

Spin-dependent quantum transport properties in twisted graphene is calculated using density functional theory (DFT) and non-equilibrium Green’s function (NEGF) formulation. Twisting increases the band gap and reduces the spin transport in twisted graphene. At low bias, twisting restricts any spin-up current in antiparallel configuration (APC) which results in higher magnetoresistance (MR), and at higher bias, twisting increases the spin-up current slightly, resulting in lower MR. The MR obtained in twisted graphene at low biases is greater than that of pristine graphene. High spin filtration is observed in parallel configuration and APC for twisted graphene at higher biases which is greater than that of pristine graphene, but at low voltages, pristine gives higher spin filtration than twisted graphene. More... »

PAGES

3497-3501

References to SciGraph publications

  • 2016-01. First-Principles Study of Spin Transport in CrO2–Graphene–CrO2 Magnetic Tunnel Junction in JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • Identifiers

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    http://scigraph.springernature.com/pub.10.1007/s10948-017-4144-z

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    http://dx.doi.org/10.1007/s10948-017-4144-z

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