Multi-barrier resonant tunneling for the one-dimensional nonlinear Schrödinger Equation

Details Multi-barrier resonant tunneling for the one-dimensional nonlinear Schrödinger Equation Multi-barrier resonant tunneling for the one-dimensional nonlinear Schrödinger Equation

2009-08-31

arxiv.org/abs/0908.4475v1

J. Phys. A: Math. Theor. 42 (2009) 425301

Physics

Quantum Physics

22 pages, 11 figures

Scientific paper

10.1088/1751-8113/42/42/425301

For the stationary one-dimensional nonlinear Schr\"odinger equation (or Gross-Pitaevskii equation) nonlinear resonant transmission through a finite number of equidistant identical barriers is studied using a (semi-) analytical approach. In addition to the occurrence of bistable transmission peaks known from nonlinear resonant transmission through a single quantum well (respectively a double barrier) complicated (looped) structures are observed in the transmission coefficient which can be identified as the result of symmetry breaking similar to the emergence of self-trapping states in double well potentials. Furthermore it is shown that these results are well reproduced by a nonlinear oscillator model based on a small number of resonance eigenfunctions of the corresponding linear system.

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