Resonant Tunneling Through Two Discrete Energy States

Time-dependent resonant tunneling via two discrete states.

Time-dependent tunneling phenomena have received increasing attention in recent years. In the early eighties, Büttiker and Landauer studied the tunneling time needed for an electron to traverse a potential barrier. More recent theoretical work focused on the time-dependence of resonant tunneling using an effective Schrödinger equation and on a description of the time-dependent current through m...

Resonant tunneling through Andreev levels

We use a semiclassical approach for analysing the tunneling transport through a normal conductor in contact with superconducting mirrors. Our analysis of the electron-hole propagation along semiclassical trajectories shows that resonant transmission through Andreev levels is possible resulting in an excess, low-energy quasiparticle contribution to the conductance. The excess conductance oscilla...

Resonant tunneling through quantum-dot arrays.

Coherent resonant tunneling through an artificial molecule

Coherent resonant tunneling through an array of quantum dots in an inhomogeneous magnetic field is investigated using an extended Hubbard model. Both the multiterminal conductance of an array of quantum dots and the persistent current of a quantum-dot molecule embedded in an Aharanov-Bohm ring are calculated. The conductance and persistent current are calculated analytically for the case of a d...

Resonant tunneling through traps in Schottky barriers

2014 The authors present a theoretical treatment of the resonant tunneling phenomenon in Schottky barriers including deep traps whose potentials are represented by Dirac 03B4 functions. It is shown that in this case the quantum treatment of the tunneling effect leads to exactly the same result as that obtained when applying a more phenomenological formulation of the problem similar to the one u...