Magnetic field induced metal-insulator transition in a Kagome Nanoribbon

Details Magnetic field induced metal-insulator transition in a Kagome Nanoribbon Magnetic field induced metal-insulator transition in a Kagome Nanoribbon

2011-06-27

arxiv.org/abs/1106.5399v2

Journal of Applied Physics, Volume 110, Issue 9, Page 094306 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 9 figures

Scientific paper

10.1063/1.3658253

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-B\"{u}ttiker 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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