Time-dependent transport properties in quantum well with thin inserted layer

Zhenhong Dai () and Jun Ni

The European Physical Journal B: Condensed Matter and Complex Systems, 2005, vol. 45, issue 1, 129-136

Abstract: We investigate the time-dependent transport properties of quantum well on the situation of nonlinear bias, where a thin potential well layer is inserted in the main quantum well. In our calculations, we consider the effects from all kinds of phonon interactions in the device. We find that the charge redistribution and electron motion in the whole structure play an important effect on the final current-voltage (I-V) curve. We also find an evident current hysteresis region and current high-frequency oscillation with time in this particular region. The results show that the inserted potential well layer can make the current hysteresis width narrower than that in the single quantum well structure, and it also damps the current oscillation. Due to the existence of the inserted layer, the plateau structure of I-V curve found in the single quantum well disappears. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Date: 2005
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DOI: 10.1140/epjb/e2005-00171-x

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