Guided electron waves in coupled quantum wells

摘要

Propagation of guided electron waves in two coupled quantum wells is studied and analyzed by decomposing 1-D coupled eigenstates in terms of multiple eigenstates of individual wells. The energy transfer from one mode to the other modes in either channel is characterized. The dominant transfer is to the matched mode in the other channel. But tunneling to other modes nearest in energy to the incident mode is found to be quite large, particularly under high mode injection.