Abstract
We study the ballistic transport in quantum channels containing attractive impurities. We show that coherent interaction between asymptotic resonances may cause resonances to disappear and discrete levels to appear in the continuum at certain (critical) values of the parameters of the system. For the first time the tunneling of an electron through discrete levels is investigated. We find that the transmissivity changes dramatically when the scattered electrons at infinity have an energy coinciding with that of the discrete levels. It is found that a new type of degeneracy may arise in the system at critical values of the parameters, a degeneracy in which one state is described by a localized wave function and the other, by a propagating wave function. We calculate the critical values of the parameters of the structure and discuss ways of experimentally implementing this effect in two-dimensional channels.
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Zh. Éksp. Teor. Fiz. 115, 211–230 (January 1999)
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Kim, C.S., Satanin, A.M. Tunneling through discrete levels in the continuum. J. Exp. Theor. Phys. 88, 118–127 (1999). https://doi.org/10.1134/1.558773
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DOI: https://doi.org/10.1134/1.558773