Abstract
The interference phenomenon of tunneling electrons in a magnetic field is studied by calculating the conductance in a structure which is similar to an Aharonov–Bohm (AB) ring, that is, a rectangle-shaped finite potential barrier in a straight quantum wire. The overall interference pattern resembles the AB oscillation fairly well. However, the aperiodicity of the pattern is in sharp contrast with the conventional AB oscillation. The behavior of the oscillation is very similar even when the lateral width of the potential barrier is the same as that of the quantum wire. In addition, the suppression of tunneling by the magnetic field is found to depend on the width of quantum wires. At high magnetic fields, the narrower the wire is, the larger the tunneling probability can be.
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