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arXiv · 1106.5399

Magnetic field induced metal-insulator transition in a Kagome Nanoribbon

Moumita Dey·Santanu K. Maiti·S. N. Karmakar
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Abstract

In the present work we investigate two-terminal electron transport through a finite width kagome lattice nanoribbon in presence of a perpendicular magnetic field. We employ a simple tight-binding (T-B) Hamiltonian to describe the system and obtain the transmission properties by using Green's function technique within the framework of Landauer-Büttiker formalism. After presenting an analytical description of energy dispersion relation of a kagome nanoribbon in presence of the magnetic field, we investigate numerically the transmittance spectra together with the density of states and current-voltage characteristics. It is shown that for a specific value of the Fermi energy the kagome network can exhibit a magnetic field induced metal-insulator transition which is the central investigation of this communication. Our analysis may be inspiring in designing low-dimensional switching devices.

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Moumita Dey, Santanu K. Maiti, S. N. Karmakar. 2011-06-28. Magnetic field induced metal-insulator transition in a Kagome Nanoribbon. https://doi.org/10.1063/1.3658253

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