Tunneling in a magnetic field

Details Tunneling in a magnetic field Tunneling in a magnetic field

2005-11-07

arxiv.org/abs/quant-ph/0511052v1

Physics

Quantum Physics

9 pages, 6 figures

Scientific paper

10.1103/PhysRevA.73.052106

Quantum tunneling between two potential wells in a magnetic field can be strongly increased when the potential barrier varies in the direction perpendicular to the line connecting the two wells and remains constant along this line. An oscillatory structure of the wave function is formed in the direction joining the wells. The resulting motion can be coherent like motion in a conventional narrow band periodic structure. A particle penetrates the barrier over a long distance which strongly contrasts to WKB-like tunneling. The whole problem is stationary. A not very small tunneling transparency can be set between two quantum wires with real physical parameters and separated by a long potential barrier. The phenomenon is connected to Euclidean resonance.

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