Quantum waveguide theory of a fractal structure

Based on waveguide theory we investigate electronic transport properties of Bethe lattices with a mesoscopic ring threaded by a magnetic flux. The generalized eigen-function method (GEM) is used to calculate the transmission and reflection coefficients up to the fifth generation of Bethe lattices. The relationships among the transmission coefficient T , magnetic flux φ and wave vector kl are investigated in detail. The numerical results are shown by the three-dimensional plots and contour maps. Some resonant-transmission features and the symmetry of the transmission coefficient T to flux φ are observed and discussed.

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Quantum Waveguide Properties of Bethe Lattices with a Ring

Lin

Hou

Liu

2008

Chinese Phys. Lett.

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Quantum waveguide theory of a fractal structure

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Quantum Waveguide Properties of Bethe Lattices with a Ring

Quantum Waveguide Properties of Bethe Lattices with a Ring

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