Tunneling currents and twohyphen;body effects in quantum well and superlattice structures

摘要

Direct current (dc) tunneling through a finite superlattice or quantum well structure is analyzed in an independent particle model. A correction is made to the Tsundash;Esaki lsqb;Appl. Phys. Lett.22, 562 (1973)rsqb; onehyphen;particle current expression. In addition, a twohyphen;body current term is found which can, in some cases, be of the same order of magnitude as the onehyphen;particle current terms of Tsu and Esaki.