INTERFERENCE BETWEEN ELECTRONIC AND IONIC FLOWS IN SEMICONDUCTING CO1-DELTA-O

The linear transport theory prescribes that in a semiconducting oxide, an ionic flow could be caused not only by the ionic electrochemical p otential gradient, but also, indirectly, by the electronic electrochem ical potential gradient. It has long been believed, however, that the latter - indirect or interference effect may be negligible. Quite rece ntly, we have experimentally found for Co1-deltaO that the interferenc e effect is by no means negligible. The results which have been accumu lated up to date are reported, and the implications of the non-zero in terference effect are discussed.