Controlled Wavefunction Mixing in a Strongly Coupled One-Dimensional Wire

Details Controlled Wavefunction Mixing in a Strongly Coupled One-Dimensional Wire Controlled Wavefunction Mixing in a Strongly Coupled One-Dimensional Wire

1999-01-18

arxiv.org/abs/cond-mat/9901161v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.59.12252

We investigate the transport properties of two strongly coupled ballistic one-dimensional (1D) wires, defined by a split-gate structure deposited on a GaAs/AlGaAs double quantum well. Matching the widths and electron densities of the two wires brings them into resonance, forming symmetric and antisymmetric 1D subbands separated by energy gaps that are measured to be larger than their two-dimensional counterpart. Applying a magnetic field parallel to the wire axes enhances wavefunction mixing at low fields, whereas at high fields the wires become completely decoupled.

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