Enhancement and suppression of tunneling by controlling symmetries of a potential barrier - Quantum PhysicsReport as inadecuate




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Abstract: We present a class of 2D systems which shows a counterintuitive property thatcontradicts a semi classical intuition: A 2D quantum particle -prefers-tunneling through a barrier rather than traveling above it. Viewing the oneparticle 2D system as the system of two 1D particles, it is demonstrated thatthis effect occurs due to a specific symmetry of the barrier that forcesexcitations of the interparticle degree of freedom that, in turn, leads to theappearance of an effective potential barrier even though there is no -real-barrier. This phenomenon cannot exist in 1D.



Author: Denys I. Bondar, Wing-Ki Liu, Misha Yu. Ivanov

Source: https://arxiv.org/







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