| Popis: |
We present a simple exactly solvable model, based on an Anderson-Newns-Grimley type Hamiltonian, for a three-terminal device at molecular level. This device contains two nanowires as source and drain, a scanning tunnelling microscopy (STM) tip as gate and an active atom or molecule between the STM tip and the two nanowires. We show that an amplification effect of the tunnelling current between the source and the drain is obtained by changing the gate voltage and the distance between the gate and the active molecule. |
