Journal
PHYSICAL REVIEW B
Volume 82, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.115417
Keywords
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Funding
- Flemish Science Foundation (FWO-Vl)
- Belgian Science Policy
- Canadian NSERC [OGP0121756]
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Fabry-Perot resonances in the transmission through single and double, graphene-based barriers (of height V) and wells are investigated and their dependence on an applied perpendicular magnetic field. For rectangular barriers the conductance decreases with increasing magnetic field while the resonances weaken (become more pronounced) with increasing magnetic field for E-FV). The position of the resonances exhibit a linear shift with magnetic field which move to lower (higher) energy for E-FV). Compared to semiellipticor Gaussian-shaped barriers they show a smaller number of resonances in the absence of a magnetic field and an overall lower conductance but the resonant structure is more pronounced. The conductance of asymmetric double barriers show two major regions of resonances while the symmetric ones show one, that of three asymmetric barriers three, and so on.
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