COHERENT ELECTRONIC-PROPERTIES OF COUPLED 2-DIMENSIONAL QUANTUM-DOT ARRAYS

In this paper we review our recent study of coherent electronic proper ties of coupled two-dimensional quantum dot arrays using numerical exa ct-diagonalization methods on a Mott-Hubbard type correlated tight-bin ding model. We predict the existence of a novel kind of persistent cur rent in a two-dimensional isolated array of quantum dots in a transver se magnetic field. We calculate the conductance spectrum for resonant tunneling transport through a coherent two-dimensional array of quantu m dots in the Coulomb Blockade regime. We also calculate the effective two-terminal capacitance of an array coupled to bias leads. (C) 1996 Academic Press Limited