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Tunneling and nonlinear transport in a vertically coupled GaAs/AlGaAs double quantum wire system

E. Bielejec·J. A. Seamons·J. L. Reno·M. P. Lilly
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Abstract

We report low-dimensional tunneling in an independently contacted vertically coupled quantum wire system. This nanostructure is fabricated in a high quality GaAs/AlGaAs parallel double quantum well heterostructure. Using a novel flip chip technique to align top and bottom split gates to form low-dimensional constrictions in each of the independently contacted quantum wells we explicitly control the subband occupation of the individual wires. In addition to the expected 2D-2D tunneling results, we have found additional tunneling features that are related to the 1D quantum wires.

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E. Bielejec, J. A. Seamons, J. L. Reno, M. P. Lilly. 2004-11-10. Tunneling and nonlinear transport in a vertically coupled GaAs/AlGaAs double quantum wire system. https://doi.org/10.1063/1.1871340

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