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Graphene Valley Filter Using a Line Defect
Open accessAbstract
With its two degenerate valleys at the Fermi level, the band structure of graphene provides the opportunity to develop unconventional electronic applications. Herein, we show that electron and hole quasiparticles in graphene can be filtered according to which valley they occupy without the need to introduce confinement. The proposed valley filter is based on scattering off a recently observed line defect in graphene. Quantum transport calculations show that the line defect is semitransparent and that quasiparticles arriving at the line defect with a high angle of incidence are transmitted with a valley polarization near 100%.
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Cites
Superior Thermal Conductivity of Single-Layer Graphene
Balandin, A. A., Ghosh, S., Bao, W., Calizo, I., Teweldebrhan, D., Miao, F., & Lau, C. N. (2008) · Nano Letters · doi:10.1021/nl0731872 · Cited by 13,823
Slonczewski, J. C., & Weiss, P. R. (1958) · Physical Review · doi:10.1103/physrev.109.272 · Cited by 1,647
Cited by
Spin and pseudospins in layered transition metal dichalcogenides
Xu, X., Yao, W., Xiao, D., & Heinz, T. F. (2014) · Nature Physics · doi:10.1038/nphys2942 · Cited by 2,855
Gated silicene as a tunable source of nearly 100% spin-polarized electrons
Tsai, W.-F., Huang, C.-Y., Chang, T.-R., Lin, H., Jeng, H.-T., & Bansil, A. (2013) · Nature Communications · doi:10.1038/ncomms2525 · Cited by 451
Kariyado, T., & Ogata, M. (2011) · Journal of the Physical Society of Japan · doi:10.1143/jpsj.80.083704 · Cited by 93
Metadata
- Authors
- Gunlycke, D., & White, C. T.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2011-03-28
- Volume
- 106
- Issue
- 13
- Pages
- 136806-136806
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2027815102
- Cited by
- 498
- References
- 2
- FWCI
- 23.55
- Type
- journal article
- Language
- en
- Open access
- green
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