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A valley-filtering switch based on strained graphene
- Source :
- Journal of physics. Condensed matter : an Institute of Physics journal. 23(38)
- Publication Year :
- 2011
-
Abstract
- We investigate valley-dependent transport through a graphene sheet modulated by both the substrate strain and the fringe field of two parallel ferromagnetic metal (FM) stripes. When the magnetizations of the two FM stripes are switched from the parallel to the antiparallel alignment, the total conductance, valley polarization and valley conductance excess change greatly over a wide range of Fermi energy, which results from the dependence of the valley-related transmission suppression on the polarity configuration of inhomogeneous magnetic fields. Thus the proposed structure exhibits the significant features of a valley-filtering switch and a magnetoresistance device.
- Subjects :
- Materials science
Condensed matter physics
Magnetoresistance
Graphene
Conductance
Fermi energy
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Condensed Matter Physics
Polarization (waves)
Magnetic field
law.invention
Ferromagnetism
law
Condensed Matter::Strongly Correlated Electrons
General Materials Science
Antiparallel (electronics)
Subjects
Details
- ISSN :
- 1361648X
- Volume :
- 23
- Issue :
- 38
- Database :
- OpenAIRE
- Journal :
- Journal of physics. Condensed matter : an Institute of Physics journal
- Accession number :
- edsair.doi.dedup.....bc7da39689b46e2fb39d8d9f1cc77021