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arXiv · 2206.03553

Fabry-Perot and Aharonov-Bohm interference in ideal graphene nanoribbons

S. Ihnatsenka
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Abstract

Quantum-mechanical calculations of electron magneto-transport in ideal graphene nanoribbons are presented. In noninteracting theory, it is predicted that an ideal ribbon that is attached to wide leads should reveal Fabry-Perot conductance oscillations in magnetic field. In the theory with Coulomb interaction taken into account, the oscillation pattern should rather be determined by the Aharonov-Bohm interference effect. Both of these theories predict the formation of quasi-bound states, albeit of different structures, inside the ribbon because of strong electron scattering on the interfaces between the connecting ribbon and the leads. Conductance oscillations are a result of resonant backscattering via these quasi-bound states.

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S. Ihnatsenka. 2022-06-07. Fabry-Perot and Aharonov-Bohm interference in ideal graphene nanoribbons. https://doi.org/10.1103/physrevb.106.115408

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