Tunnel injection into a Wannier–Stark ladder
- 13 February 1989
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 54 (7) , 647-649
- https://doi.org/10.1063/1.100906
Abstract
We describe tunneling measurements of the electronic states of superlattices in which an electric field has destroyed the miniband structure. The tunneling characteristics reveal that the minibands collapse into localized Wannier–Stark states, which can be resolved in the first two quantum wells of the superlattice. The positions can be accounted for quantitatively by a combination of electrostatic and quantum mechanical effects.Keywords
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