RESONANT-TUNNELING THROUGH A DOUBLE-BARRIER SYSTEM WITH A LATERAL CONFINEMENT

We study the transport through of a double barrier heterostructure wit h a lateral confinement. In this system the region between the barrier s simulates a quantum wire. The shape of the I-V and G-V curves are ch aracteristic of a double-barrier system with a superpossed structure w hich is a consequence of the lateral confinement. We also include nonl inearities due to the electron-electron interaction and we calculate s elfconsistently the main transport properties of the system. We invest igate the effect of the nonlinear term in different confinement regime s.