Superradiance Transition in Transport Through Nanosystems

Details Superradiance Transition in Transport Through Nanosystems Superradiance Transition in Transport Through Nanosystems

2009-01-03

arxiv.org/abs/0901.0305v1

Phys. Rev. B 79, 155108 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Using an energy-independent non-Hermitian Hamiltonian approach to open systems, we fully describe transport through a sequence of potential barriers as external barriers are varied. Analyzing the complex eigenvalues of the non-Hermitian Hamiltonian model, a transition to a superradiant regime is shown to occur. Transport properties undergo a strong change at the superradiance transition, where the transmission is maximized and a drastic change in the structure of resonances is demonstrated. Finally, we analyze the effect of the superradiance transition in the Anderson localized regime.

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